diff --git a/nimble/transport/da1469x/syscfg.yml b/nimble/transport/da1469x/syscfg.yml
index 4ea9da9b3..2ce8cd3cf 100644
--- a/nimble/transport/da1469x/syscfg.yml
+++ b/nimble/transport/da1469x/syscfg.yml
@@ -16,28 +16,12 @@
 # under the License.
 #
 
-syscfg.defs:
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'Number of high-priority event buffers.'
-        value:  2
+syscfg.vals.'!BLE_HCI_BRIDGE && !BLE_EXT_ADV':
+    BLE_HCI_EVT_HI_BUF_COUNT: 2
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_HCI_EVT_BUF_SIZE: 70
+    BLE_ACL_BUF_COUNT: 4
+    BLE_ACL_BUF_SIZE: 255
 
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'Number of low-priority event buffers.'
-        value:  8
-
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'Size of each event buffer, in bytes.'
-        value:  70
-
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 4
-
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 255
-
-syscfg.vals.BLE_EXT_ADV:
+syscfg.vals.'!BLE_HCI_BRIDGE && BLE_EXT_ADV':
     BLE_HCI_EVT_BUF_SIZE: 274
diff --git a/nimble/transport/dialog_cmac/cmac_driver/diag/src/cmac_diag.c b/nimble/transport/dialog_cmac/cmac_driver/diag/src/cmac_diag.c
index 4f7547065..0a4e27e6d 100644
--- a/nimble/transport/dialog_cmac/cmac_driver/diag/src/cmac_diag.c
+++ b/nimble/transport/dialog_cmac/cmac_driver/diag/src/cmac_diag.c
@@ -20,7 +20,7 @@
 #include "syscfg/syscfg.h"
 #include "mcu/mcu.h"
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 void
 cmac_diag_setup_host(void)
 {
diff --git a/nimble/transport/dialog_cmac/cmac_driver/include/cmac_driver/cmac_shared.h b/nimble/transport/dialog_cmac/cmac_driver/include/cmac_driver/cmac_shared.h
index 90b5827dd..4e37bb8b8 100644
--- a/nimble/transport/dialog_cmac/cmac_driver/include/cmac_driver/cmac_shared.h
+++ b/nimble/transport/dialog_cmac/cmac_driver/include/cmac_driver/cmac_shared.h
@@ -131,7 +131,7 @@ struct cmac_shared_data {
     uint8_t mbox_c2s_buf[ MYNEWT_VAL(CMAC_MBOX_SIZE_C2S) ];
 };
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 extern volatile struct cmac_shared_data *g_cmac_shared_data;
 #elif MYNEWT_VAL(BLE_CONTROLLER)
 extern volatile struct cmac_shared_data g_cmac_shared_data;
@@ -161,7 +161,7 @@ void cmac_rand_set_isr_cb(cmac_rand_isr_cb_t cb);
 void cmac_shared_init(void);
 void cmac_shared_sync(void);
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 #define CMAC_SHARED_LOCK_VAL    0x40000000
 #elif MYNEWT_VAL(BLE_CONTROLLER)
 #define CMAC_SHARED_LOCK_VAL    0xc0000000
diff --git a/nimble/transport/dialog_cmac/cmac_driver/pkg.yml b/nimble/transport/dialog_cmac/cmac_driver/pkg.yml
index 5b4a21291..00200b65a 100644
--- a/nimble/transport/dialog_cmac/cmac_driver/pkg.yml
+++ b/nimble/transport/dialog_cmac/cmac_driver/pkg.yml
@@ -37,3 +37,6 @@ pkg.post_link_cmds.BLE_CONTROLLER:
 
 pkg.pre_link_cmds.BLE_HOST:
     scripts/build_libcmac.sh: 100
+
+pkg.pre_link_cmds.BLE_HCI_BRIDGE:
+    scripts/build_libcmac.sh: 100
diff --git a/nimble/transport/dialog_cmac/cmac_driver/src/cmac_mbox.c b/nimble/transport/dialog_cmac/cmac_driver/src/cmac_mbox.c
index 9594dbe90..88764c4df 100644
--- a/nimble/transport/dialog_cmac/cmac_driver/src/cmac_mbox.c
+++ b/nimble/transport/dialog_cmac/cmac_driver/src/cmac_mbox.c
@@ -49,7 +49,7 @@ cmac_mbox_set_write_notif_cb(cmac_mbox_write_notif_cb *cb)
 int
 cmac_mbox_read(void)
 {
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     volatile struct cmac_mbox *mbox = &g_cmac_shared_data->mbox_c2s;
     uint8_t *mbox_buf = (uint8_t *)&g_cmac_shared_data->mbox_c2s_buf;
     const uint16_t mbox_size = MYNEWT_VAL(CMAC_MBOX_SIZE_C2S);
@@ -96,7 +96,7 @@ cmac_mbox_read(void)
 int
 cmac_mbox_write(const void *data, uint16_t len)
 {
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     volatile struct cmac_mbox *mbox = &g_cmac_shared_data->mbox_s2c;
     uint8_t *mbox_buf = (uint8_t *)&g_cmac_shared_data->mbox_s2c_buf;
     const uint16_t mbox_size = MYNEWT_VAL(CMAC_MBOX_SIZE_S2C);
diff --git a/nimble/transport/dialog_cmac/cmac_driver/src/cmac_rand.c b/nimble/transport/dialog_cmac/cmac_driver/src/cmac_rand.c
index 67a315f96..10810972c 100644
--- a/nimble/transport/dialog_cmac/cmac_driver/src/cmac_rand.c
+++ b/nimble/transport/dialog_cmac/cmac_driver/src/cmac_rand.c
@@ -26,7 +26,7 @@
 #include "os/os_arch.h"
 #include "os/os.h"
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 int
 cmac_rand_is_active(void)
 {
diff --git a/nimble/transport/dialog_cmac/cmac_driver/src/cmac_shared.c b/nimble/transport/dialog_cmac/cmac_driver/src/cmac_shared.c
index 24640ca47..a4f2e37f5 100644
--- a/nimble/transport/dialog_cmac/cmac_driver/src/cmac_shared.c
+++ b/nimble/transport/dialog_cmac/cmac_driver/src/cmac_shared.c
@@ -34,7 +34,7 @@
 #define min(_a, _b)     ((_a) < (_b) ? (_a) : (_b))
 #endif
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 volatile struct cmac_shared_data *g_cmac_shared_data;
 #include "mcu/da1469x_clock.h"
 #define MCU_DIAG_SER(_x)
@@ -45,7 +45,7 @@ volatile struct cmac_shared_data g_cmac_shared_data     __attribute__((section("
 void
 cmac_shared_init(void)
 {
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     g_cmac_shared_data = (void *)(MCU_MEM_SYSRAM_START_ADDRESS +
                                   MEMCTRL->CMI_SHARED_BASE_REG);
 
@@ -77,7 +77,7 @@ cmac_shared_sync(void)
      * to wait until CMAC finished initialization as otherwise host may start
      * sending HCI packets which will timeout as there is no one to read them.
      */
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     assert(g_cmac_shared_data->magic_sys == 0);
 
     while (g_cmac_shared_data->magic_cmac != CMAC_SHARED_MAGIC_CMAC);
diff --git a/nimble/transport/dialog_cmac/src/ble_hci_cmac_common.c b/nimble/transport/dialog_cmac/src/ble_hci_cmac_common.c
index 665b62166..5a41ee631 100644
--- a/nimble/transport/dialog_cmac/src/ble_hci_cmac_common.c
+++ b/nimble/transport/dialog_cmac/src/ble_hci_cmac_common.c
@@ -41,6 +41,7 @@
                                          BLE_MBUF_MEMBLOCK_OVERHEAD +       \
                                          BLE_HCI_DATA_HDR_SZ, OS_ALIGNMENT)
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
 static uint8_t ble_hci_pool_cmd_mempool_buf[
     OS_MEMPOOL_BYTES(HCI_CMD_COUNT, BLE_HCI_TRANS_CMD_SZ)];
 static struct os_mempool ble_hci_pool_cmd_mempool;
@@ -54,6 +55,7 @@ static uint8_t ble_hci_pool_evt_lo_mempool_buf[
     OS_MEMPOOL_BYTES(MYNEWT_VAL(BLE_HCI_EVT_LO_BUF_COUNT),
                      MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE))];
 static struct os_mempool ble_hci_pool_evt_lo_mempool;
+#endif
 
 static uint8_t ble_hci_pool_acl_mempool_buf[
     OS_MEMPOOL_BYTES(MYNEWT_VAL(BLE_ACL_BUF_COUNT),
@@ -66,6 +68,7 @@ __attribute__((weak)) void ble_hci_trans_notify_free(void);
 static os_mempool_put_fn *g_ble_hci_pool_acl_mempool_put_cb;
 static void *g_ble_hci_pool_acl_mempool_put_arg;
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
 int
 ble_hci_trans_reset(void)
 {
@@ -117,6 +120,7 @@ ble_hci_trans_buf_free(uint8_t *buf)
 
     ble_hci_trans_notify_free();
 }
+#endif
 
 struct os_mbuf *
 ble_hci_cmac_alloc_acl_mbuf(void)
@@ -147,6 +151,7 @@ ble_hci_cmac_free_acl_cb(struct os_mempool_ext *mpe, void *data, void *arg)
 }
 
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
 int
 ble_hci_trans_set_acl_free_cb(os_mempool_put_fn *cb, void *arg)
 {
@@ -155,6 +160,7 @@ ble_hci_trans_set_acl_free_cb(os_mempool_put_fn *cb, void *arg)
 
     return 0;
 }
+#endif
 
 void
 ble_hci_cmac_init(void)
@@ -163,6 +169,7 @@ ble_hci_cmac_init(void)
 
     SYSINIT_ASSERT_ACTIVE();
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
     rc = os_mempool_init(&ble_hci_pool_cmd_mempool,
                          HCI_CMD_COUNT, BLE_HCI_TRANS_CMD_SZ,
                          ble_hci_pool_cmd_mempool_buf, "ble_hci_cmd");
@@ -179,6 +186,7 @@ ble_hci_cmac_init(void)
                          MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE),
                          ble_hci_pool_evt_lo_mempool_buf, "ble_hci_evt_lo");
     SYSINIT_PANIC_ASSERT(rc == 0);
+#endif
 
     rc = os_mempool_ext_init(&ble_hci_pool_acl_mempool,
                              MYNEWT_VAL(BLE_ACL_BUF_COUNT), POOL_ACL_BLOCK_SIZE,
diff --git a/nimble/transport/dialog_cmac/src/ble_hci_cmac_hs.c b/nimble/transport/dialog_cmac/src/ble_hci_cmac_hs.c
index 1164fe718..172fc8795 100644
--- a/nimble/transport/dialog_cmac/src/ble_hci_cmac_hs.c
+++ b/nimble/transport/dialog_cmac/src/ble_hci_cmac_hs.c
@@ -21,7 +21,7 @@
 #include <string.h>
 #include "syscfg/syscfg.h"
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 
 #include "cmac_driver/cmac_shared.h"
 #include "cmac_driver/cmac_host.h"
diff --git a/nimble/transport/dialog_cmac/src/ble_hci_trans_h4.c b/nimble/transport/dialog_cmac/src/ble_hci_trans_h4.c
index 74da39123..628ae75d9 100644
--- a/nimble/transport/dialog_cmac/src/ble_hci_trans_h4.c
+++ b/nimble/transport/dialog_cmac/src/ble_hci_trans_h4.c
@@ -64,7 +64,7 @@ ble_hci_trans_h4_rxs_start(struct ble_hci_trans_h4_rx_state *rxs, uint8_t pkt_ty
     case BLE_HCI_TRANS_H4_PKT_TYPE_ACL:
         rxs->min_len = 4;
         break;
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     case BLE_HCI_TRANS_H4_PKT_TYPE_EVT:
         rxs->min_len = 2;
         break;
@@ -95,7 +95,7 @@ static int
 ble_hci_trans_h4_rx_state_w4_header(struct ble_hci_trans_h4_rx_state *rxs,
                                     struct input_buffer *ib)
 {
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     int pool;
 #endif
     int rc;
@@ -127,7 +127,7 @@ ble_hci_trans_h4_rx_state_w4_header(struct ble_hci_trans_h4_rx_state *rxs,
         os_mbuf_append(rxs->om, rxs->hdr, rxs->len);
         rxs->expected_len = get_le16(&rxs->hdr[2]) + 4;
         break;
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     case BLE_HCI_TRANS_H4_PKT_TYPE_EVT:
         pool = BLE_HCI_TRANS_BUF_EVT_HI;
         if (rxs->hdr[0] == BLE_HCI_EVCODE_LE_META) {
@@ -194,7 +194,7 @@ ble_hci_trans_h4_rx_state_w4_payload(struct ble_hci_trans_h4_rx_state *rxs,
 #if MYNEWT_VAL(BLE_CONTROLLER)
     case BLE_HCI_TRANS_H4_PKT_TYPE_CMD:
 #endif
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     case BLE_HCI_TRANS_H4_PKT_TYPE_EVT:
 #endif
         if (rxs->buf) {
@@ -240,7 +240,7 @@ ble_hci_trans_h4_rx_state_completed(struct ble_hci_trans_h4_rx_state *rxs,
 #if MYNEWT_VAL(BLE_CONTROLLER)
     case BLE_HCI_TRANS_H4_PKT_TYPE_CMD:
 #endif
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     case BLE_HCI_TRANS_H4_PKT_TYPE_EVT:
 #endif
         if (rxs->buf) {
diff --git a/nimble/transport/dialog_cmac/syscfg.yml b/nimble/transport/dialog_cmac/syscfg.yml
index c44773efc..54607fd81 100644
--- a/nimble/transport/dialog_cmac/syscfg.yml
+++ b/nimble/transport/dialog_cmac/syscfg.yml
@@ -16,28 +16,12 @@
 # under the License.
 #
 
-syscfg.defs:
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'Number of high-priority event buffers.'
-        value:  2
+syscfg.vals.'!BLE_HCI_BRIDGE && !(BLE_EXT_ADV || BLE_LL_CFG_FEAT_LL_EXT_ADV)':
+    BLE_HCI_EVT_HI_BUF_COUNT: 2
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_HCI_EVT_BUF_SIZE: 70
+    BLE_ACL_BUF_COUNT: 4
+    BLE_ACL_BUF_SIZE: 255
 
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'Number of low-priority event buffers.'
-        value:  8
-
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'Size of each event buffer, in bytes.'
-        value:  70
-
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 4
-
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 255
-
-syscfg.vals.'BLE_EXT_ADV || BLE_LL_CFG_FEAT_LL_EXT_ADV':
+syscfg.vals.'!BLE_HCI_BRIDGE && (BLE_EXT_ADV || BLE_LL_CFG_FEAT_LL_EXT_ADV)':
     BLE_HCI_EVT_BUF_SIZE: 257
diff --git a/nimble/transport/emspi/syscfg.yml b/nimble/transport/emspi/syscfg.yml
index 4751271b0..501175467 100644
--- a/nimble/transport/emspi/syscfg.yml
+++ b/nimble/transport/emspi/syscfg.yml
@@ -28,28 +28,6 @@ syscfg.defs:
             # This is a host-only transport.
             - BLE_HOST
 
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'Number of high-priority event buffers.'
-        value:  2
-
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'Number of low-priority event buffers.'
-        value:  8
-
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'Size of each event buffer, in bytes.'
-        value:  70
-
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 4
-
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 255
-
     BLE_HCI_ACL_OUT_COUNT:
         description: >
             This count is used in creating a pool of elements used by the
@@ -95,5 +73,12 @@ syscfg.defs:
             Sysinit stage for the EMSPI BLE transport.
         value: 100
 
-syscfg.vals.BLE_EXT_ADV:
+syscfg.vals.'!BLE_HCI_BRIDGE && BLE_EXT_ADV':
     BLE_HCI_EVT_BUF_SIZE: 257
+
+syscfg.vals.'!BLE_HCI_BRIDGE && !BLE_EXT_ADV':
+    BLE_HCI_EVT_HI_BUF_COUNT: 2
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_HCI_EVT_BUF_SIZE: 70
+    BLE_ACL_BUF_COUNT: 4
+    BLE_ACL_BUF_SIZE: 255
diff --git a/nimble/transport/nrf5340/src/nrf5340_ble_hci.c b/nimble/transport/nrf5340/src/nrf5340_ble_hci.c
index 9bf956b56..fe93c0fd6 100644
--- a/nimble/transport/nrf5340/src/nrf5340_ble_hci.c
+++ b/nimble/transport/nrf5340/src/nrf5340_ble_hci.c
@@ -39,7 +39,7 @@
 #define IPC_RX_CHANNEL 1
 #endif
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 #define IPC_TX_CHANNEL 1
 #define IPC_RX_CHANNEL 0
 #endif
@@ -49,7 +49,7 @@ struct nrf5340_ble_hci_api {
     ble_hci_trans_rx_cmd_fn *cmd_cb;
     void *cmd_arg;
 #endif
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     ble_hci_trans_rx_cmd_fn *evt_cb;
     void *evt_arg;
 #endif
@@ -73,6 +73,7 @@ struct nrf5340_ble_hci_pool_cmd {
     bool allocated;
 };
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
 /*
  * If controller-to-host flow control is enabled we need to hold an extra command
  * buffer for HCI_Host_Number_Of_Completed_Packets which can be sent at any time.
@@ -98,6 +99,8 @@ static uint8_t nrf5340_ble_hci_pool_evt_lo_buf[OS_MEMPOOL_BYTES(
                                             MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE))];
 static struct os_mempool nrf5340_ble_hci_pool_evt_lo;
 
+#endif
+
 /* Pool for ACL data */
 static uint8_t nrf5340_ble_hci_pool_acl_buf[OS_MEMPOOL_BYTES(
                                             MYNEWT_VAL(BLE_ACL_BUF_COUNT),
@@ -111,12 +114,14 @@ static struct nrf5340_ble_hci_api nrf5340_ble_hci_api;
 /* State of RX currently in progress (needs to reassemble frame) */
 static struct nrf5340_ble_hci_rx_data nrf5340_ble_hci_rx_data;
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
 int
 ble_hci_trans_reset(void)
 {
     /* XXX Should we do something with RF and/or BLE core? */
     return 0;
 }
+#endif
 
 static int
 ble_hci_trans_acl_tx(struct os_mbuf *om)
@@ -177,7 +182,7 @@ ble_hci_trans_ll_acl_tx(struct os_mbuf *om)
 }
 #endif
 
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 void
 ble_hci_trans_cfg_hs(ble_hci_trans_rx_cmd_fn *evt_cb, void *evt_arg,
                      ble_hci_trans_rx_acl_fn *acl_cb, void *acl_arg)
@@ -212,6 +217,7 @@ ble_hci_trans_hs_acl_tx(struct os_mbuf *om)
 }
 #endif
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
 uint8_t *
 ble_hci_trans_buf_alloc(int type)
 {
@@ -255,12 +261,13 @@ ble_hci_trans_buf_free(uint8_t *buf)
         assert(rc == 0);
     }
 }
+#endif
 
 static void
 nrf5340_ble_hci_trans_rx_process(int channel)
 {
     struct nrf5340_ble_hci_rx_data *rxd = &nrf5340_ble_hci_rx_data;
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     int pool = BLE_HCI_TRANS_BUF_EVT_HI;
 #endif
     int rc;
@@ -274,7 +281,7 @@ nrf5340_ble_hci_trans_rx_process(int channel)
 #if MYNEWT_VAL(BLE_CONTROLLER)
         assert((rxd->type == HCI_PKT_ACL) || (rxd->type == HCI_PKT_CMD));
 #endif
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
         assert((rxd->type == HCI_PKT_ACL) || (rxd->type == HCI_PKT_EVT));
 #endif
         break;
@@ -312,7 +319,7 @@ nrf5340_ble_hci_trans_rx_process(int channel)
         rxd->type = HCI_PKT_NONE;
         break;
 #endif
-#if MYNEWT_VAL(BLE_HOST)
+#if MYNEWT_VAL(BLE_HOST) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     case HCI_PKT_EVT:
         /* header */
         if (rxd->len < 2) {
@@ -433,6 +440,7 @@ nrf5340_ble_hci_trans_rx(int channel, void *user_data)
     }
 }
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
 int
 ble_hci_trans_set_acl_free_cb(os_mempool_put_fn *cb, void *arg)
 {
@@ -441,6 +449,7 @@ ble_hci_trans_set_acl_free_cb(os_mempool_put_fn *cb, void *arg)
 
     return 0;
 }
+#endif
 
 void
 nrf5340_ble_hci_init(void)
@@ -460,6 +469,7 @@ nrf5340_ble_hci_init(void)
                            MYNEWT_VAL(BLE_ACL_BUF_COUNT));
     SYSINIT_PANIC_ASSERT(rc == 0);
 
+#if !MYNEWT_VAL(BLE_HCI_BRIDGE)
     rc = os_mempool_init(&nrf5340_ble_hci_pool_evt_hi,
                          MYNEWT_VAL(BLE_HCI_EVT_HI_BUF_COUNT),
                          MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE),
@@ -479,6 +489,7 @@ nrf5340_ble_hci_init(void)
                          nrf5340_ble_hci_pool_cmd_mempool_buf,
                          "nrf5340_ble_hci_pool_cmd_mempool");
     SYSINIT_PANIC_ASSERT(rc == 0);
+#endif
 
     ipc_nrf5340_recv(IPC_RX_CHANNEL, nrf5340_ble_hci_trans_rx, NULL);
 }
diff --git a/nimble/transport/nrf5340/syscfg.yml b/nimble/transport/nrf5340/syscfg.yml
index 1417bbc03..a12e0c373 100644
--- a/nimble/transport/nrf5340/syscfg.yml
+++ b/nimble/transport/nrf5340/syscfg.yml
@@ -17,34 +17,21 @@
 #
 
 syscfg.defs:
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'Number of high-priority event buffers.'
-        value:  2
-
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'Number of low-priority event buffers.'
-        value:  8
-
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'Size of each event buffer, in bytes.'
-        value:  70
-
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 4
-
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 255
-
     BLE_TRANS_NRF5340_SYSINIT_STAGE:
         description: >
             Sysinit stage for the RAM BLE transport.
         value: 100
 
-syscfg.vals.BLE_EXT_ADV:
+syscfg.vals.'!BLE_HCI_BRIDGE:
+    BLE_HCI_EVT_HI_BUF_COUNT: 2
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_ACL_BUF_COUNT: 4
+    BLE_ACL_BUF_SIZE: 255
+
+syscfg.vals.'!BLE_HCI_BRIDGE && !BLE_EXT_ADV':
+    BLE_HCI_EVT_BUF_SIZE: 70
+
+syscfg.vals.'!BLE_HCI_BRIDGE && BLE_EXT_ADV':
     BLE_HCI_EVT_BUF_SIZE: 257
     
 syscfg.restrictions:
diff --git a/nimble/transport/pkg.yml b/nimble/transport/pkg.yml
index 8174286d0..5484002eb 100644
--- a/nimble/transport/pkg.yml
+++ b/nimble/transport/pkg.yml
@@ -52,3 +52,9 @@ pkg.deps.'BLE_HCI_TRANSPORT == "usb"':
 
 pkg.deps.'BLE_HCI_TRANSPORT == "nrf5340"':
     - nimble/transport/nrf5340
+
+pkg.deps.'BLE_HCI_BRIDGE_TRANSPORT == "nrf5340"':
+    - nimble/transport/nrf5340
+
+pkg.deps.'BLE_HCI_BRIDGE_TRANSPORT == "dialog_cmac"':
+    - nimble/transport/dialog_cmac
diff --git a/nimble/transport/ram/syscfg.yml b/nimble/transport/ram/syscfg.yml
index cbb57163a..6286dfe72 100644
--- a/nimble/transport/ram/syscfg.yml
+++ b/nimble/transport/ram/syscfg.yml
@@ -17,32 +17,17 @@
 #
 
 syscfg.defs:
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'Number of high-priority event buffers.'
-        value:  2
-
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'Number of low-priority event buffers.'
-        value:  8
-
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'Size of each event buffer, in bytes.'
-        value:  70
-
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 4
-
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 65535
-
     BLE_TRANS_RAM_SYSINIT_STAGE:
         description: >
             Sysinit stage for the RAM BLE transport.
         value: 100
 
+syscfg.vals:
+    BLE_HCI_EVT_HI_BUF_COUNT: 2
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_HCI_EVT_BUF_SIZE: 70
+    BLE_ACL_BUF_COUNT: 4
+    BLE_ACL_BUF_SIZE: 65535
+
 syscfg.vals.BLE_EXT_ADV:
     BLE_HCI_EVT_BUF_SIZE: 257
diff --git a/nimble/transport/socket/syscfg.yml b/nimble/transport/socket/syscfg.yml
index 2050f6469..9c8fa583d 100644
--- a/nimble/transport/socket/syscfg.yml
+++ b/nimble/transport/socket/syscfg.yml
@@ -17,24 +17,6 @@
 #
 
 syscfg.defs:
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'The size of the allocated event buffers'
-        value: 70
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'The number of high priority event buffers'
-        value: 8
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'The number of low priority event buffers'
-        value: 8
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 24
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 255
-
     BLE_HCI_ACL_OUT_COUNT:
         description: >
             This count is used in creating a pool of elements used by the
@@ -75,5 +57,12 @@ syscfg.defs:
             Sysinit stage for the socket BLE transport.
         value: 500
 
-syscfg.vals.BLE_EXT_ADV:
+syscfg.vals.'!BLE_HCI_BRIDGE && BLE_EXT_ADV':
     BLE_HCI_EVT_BUF_SIZE: 257
+
+syscfg.vals.'!BLE_HCI_BRIDGE && !BLE_EXT_ADV':
+    BLE_HCI_EVT_BUF_SIZE: 70
+    BLE_HCI_EVT_HI_BUF_COUNT: 8
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_ACL_BUF_COUNT: 24
+    BLE_ACL_BUF_SIZE: 255
diff --git a/nimble/transport/syscfg.yml b/nimble/transport/syscfg.yml
index 5bec6adf4..7eed69ba4 100644
--- a/nimble/transport/syscfg.yml
+++ b/nimble/transport/syscfg.yml
@@ -37,6 +37,47 @@ syscfg.defs:
             - usb               # USB
             - nrf5340           # nRF5340
 
+    BLE_HCI_BRIDGE_TRANSPORT:
+        description: >
+            Selects HCI transport to be included in bridge configuration build.
+            This applies to multi core configurations where controller runs
+            on separate core and main core forwards HCI traffic to external host.
+            This has virtually the same effect as including package dependency
+            manually, but it allows to easily override HCI transport package in
+            application or target settings.
+            This is the transport
+        value:
+        choices:
+            - dialog_cmac       # Dialog CMAC via shared memory
+            - nrf5340           # nRF5340
+
+    BLE_HCI_BRIDGE:
+        description: >
+            External interface (UART/USB/Socket) bridged to second core controller.
+        value: 0
+
+    BLE_HCI_EVT_HI_BUF_COUNT:
+        description: 'Number of high-priority event buffers.'
+        value:
+
+    BLE_HCI_EVT_LO_BUF_COUNT:
+        description: 'Number of low-priority event buffers.'
+        value:
+
+    BLE_HCI_EVT_BUF_SIZE:
+        description: 'Size of each event buffer, in bytes.'
+        value:
+
+    BLE_ACL_BUF_COUNT:
+        description: 'The number of ACL data buffers'
+        value:
+
+    BLE_ACL_BUF_SIZE:
+        description: >
+            This is the maximum size of the data portion of HCI ACL data
+            packets.
+        value:
+
 # Deprecated settings
     BLE_HCI_TRANSPORT_NIMBLE_BUILTIN:
         description: Use BLE_HCI_TRANSPORT instead.
@@ -69,3 +110,10 @@ syscfg.vals.BLE_HCI_TRANSPORT_SOCKET:
     BLE_HCI_TRANSPORT: socket
 syscfg.vals.BLE_HCI_TRANSPORT_EMSPI:
     BLE_HCI_TRANSPORT: emspi
+
+syscfg.vals.'(MCU_TARGET == "DA14691" || MCU_TARGET == "DA14695" || MCU_TARGET == "DA14697" || MCU_TARGET == "DA14699")':
+    BLE_HCI_BRIDGE_TRANSPORT: dialog_cmac
+
+syscfg.vals.'(MCU_TARGET == "nRF5340_APP")':
+    BLE_HCI_BRIDGE_TRANSPORT: nrf5340
+
diff --git a/nimble/transport/uart/src/ble_hci_uart.c b/nimble/transport/uart/src/ble_hci_uart.c
index ac49b30b0..cc796c000 100644
--- a/nimble/transport/uart/src/ble_hci_uart.c
+++ b/nimble/transport/uart/src/ble_hci_uart.c
@@ -53,7 +53,7 @@
  */
 
 /* XXX: for now, define this here */
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_CONTROLLER) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 extern void ble_ll_data_buffer_overflow(void);
 extern void ble_ll_hw_error(void);
 
@@ -385,7 +385,7 @@ ble_hci_uart_tx_char(void *arg)
     return rc;
 }
 
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_CONTROLLER) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 /**
  * HCI uart sync lost.
  *
@@ -418,7 +418,7 @@ ble_hci_uart_rx_pkt_type(uint8_t data)
 
     switch (ble_hci_uart_state.rx_type) {
     /* Host should never receive a command! */
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_CONTROLLER) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     case BLE_HCI_UART_H4_CMD:
         ble_hci_uart_state.rx_cmd.len = 0;
         ble_hci_uart_state.rx_cmd.cur = 0;
@@ -458,7 +458,7 @@ ble_hci_uart_rx_pkt_type(uint8_t data)
         break;
 
     default:
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_CONTROLLER) || MYNEWT_VAL(BLE_HCI_BRIDGE)
         /*
          * If we receive an unknown HCI packet type this is considered a loss
          * of sync.
@@ -477,7 +477,7 @@ ble_hci_uart_rx_pkt_type(uint8_t data)
     return 0;
 }
 
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_CONTROLLER) || MYNEWT_VAL(BLE_HCI_BRIDGE)
 /**
  * HCI uart sync loss.
  *
@@ -708,7 +708,7 @@ ble_hci_uart_rx_acl(uint8_t data)
          */
         if (pktlen > MYNEWT_VAL(BLE_ACL_BUF_SIZE)) {
             os_mbuf_free_chain(ble_hci_uart_state.rx_acl.buf);
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_CONTROLLER) || MYNEWT_VAL(BLE_HCI_BRIDGE)
             ble_hci_uart_sync_lost();
 #else
         /*
@@ -769,7 +769,7 @@ ble_hci_uart_rx_char(void *arg, uint8_t data)
     switch (ble_hci_uart_state.rx_type) {
     case BLE_HCI_UART_H4_NONE:
         return ble_hci_uart_rx_pkt_type(data);
-#if MYNEWT_VAL(BLE_CONTROLLER)
+#if MYNEWT_VAL(BLE_CONTROLLER) || MYNEWT_VAL(BLE_HCI_BRIDGE)
     case BLE_HCI_UART_H4_CMD:
         ble_hci_uart_rx_cmd(data);
         return 0;
@@ -898,6 +898,7 @@ ble_hci_trans_ll_acl_tx(struct os_mbuf *om)
     return rc;
 }
 
+#if MYNEWT_VAL(BLE_HOST)
 /**
  * Sends an HCI command from the host to the controller.
  *
@@ -955,6 +956,7 @@ ble_hci_trans_cfg_hs(ble_hci_trans_rx_cmd_fn *cmd_cb,
 {
     ble_hci_uart_set_rx_cbs(cmd_cb, cmd_arg, acl_cb, acl_arg);
 }
+#endif
 
 /**
  * Configures the HCI transport to operate with a host.  The transport will
diff --git a/nimble/transport/uart/syscfg.yml b/nimble/transport/uart/syscfg.yml
index 43486a8bf..7eff9517c 100644
--- a/nimble/transport/uart/syscfg.yml
+++ b/nimble/transport/uart/syscfg.yml
@@ -17,24 +17,6 @@
 #
 
 syscfg.defs:
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'The size of the allocated event buffers'
-        value: 70
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'The number of high priority event buffers'
-        value: 8
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'The number of low priority event buffers'
-        value: 8
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 12
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 255
-
     BLE_HCI_ACL_OUT_COUNT:
         description: >
             This count is used in creating a pool of elements used by the
@@ -70,3 +52,10 @@ syscfg.defs:
 
 syscfg.vals.BLE_EXT_ADV:
     BLE_HCI_EVT_BUF_SIZE: 257
+
+syscfg.vals:
+    BLE_HCI_EVT_BUF_SIZE: 70
+    BLE_HCI_EVT_HI_BUF_COUNT: 8
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_ACL_BUF_COUNT: 12
+    BLE_ACL_BUF_SIZE: 255
diff --git a/nimble/transport/usb/syscfg.yml b/nimble/transport/usb/syscfg.yml
index ebc261a23..38effde60 100644
--- a/nimble/transport/usb/syscfg.yml
+++ b/nimble/transport/usb/syscfg.yml
@@ -17,24 +17,6 @@
 #
 
 syscfg.defs:
-    BLE_HCI_EVT_BUF_SIZE:
-        description: 'The size of the allocated event buffers'
-        value: 70
-    BLE_HCI_EVT_HI_BUF_COUNT:
-        description: 'The number of high priority event buffers'
-        value: 8
-    BLE_HCI_EVT_LO_BUF_COUNT:
-        description: 'The number of low priority event buffers'
-        value: 8
-    BLE_ACL_BUF_COUNT:
-        description: 'The number of ACL data buffers'
-        value: 12
-    BLE_ACL_BUF_SIZE:
-        description: >
-            This is the maximum size of the data portion of HCI ACL data
-            packets. It does not include the HCI data header (of 4 bytes).
-        value: 255
-
     BLE_HCI_ACL_OUT_COUNT:
         description: >
             This count is used in creating a pool of elements used by the
@@ -53,5 +35,12 @@ syscfg.defs:
 syscfg.vals.BLE_EXT_ADV:
     BLE_HCI_EVT_BUF_SIZE: 257
 
+syscfg.vals:
+    BLE_HCI_EVT_BUF_SIZE: 70
+    BLE_HCI_EVT_HI_BUF_COUNT: 8
+    BLE_HCI_EVT_LO_BUF_COUNT: 8
+    BLE_ACL_BUF_COUNT: 12
+    BLE_ACL_BUF_SIZE: 255
+
 syscfg.restrictions:
     - '!BLE_HOST'