diff --git a/samples/bluetooth/central_hr/Kconfig.sysbuild b/samples/bluetooth/central_hr/Kconfig.sysbuild
new file mode 100644
index 00000000000..61836cb8855
--- /dev/null
+++ b/samples/bluetooth/central_hr/Kconfig.sysbuild
@@ -0,0 +1,15 @@
+# Copyright 2023-2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+source "share/sysbuild/Kconfig"
+
+config NET_CORE_BOARD
+	string
+	default "nrf5340dk/nrf5340/cpunet" if $(BOARD) = "nrf5340dk"
+	default "nrf5340_audio_dk/nrf5340/cpunet" if $(BOARD) = "nrf5340_audio_dk"
+	default "nrf5340bsim/nrf5340/cpunet" if $(BOARD_TARGET_STRING) = "NRF5340BSIM_NRF5340_CPUAPP"
+
+config NET_CORE_IMAGE_HCI_IPC
+	bool "HCI IPC image on network core"
+	default y
+	depends on NET_CORE_BOARD != ""
diff --git a/samples/bluetooth/central_hr/boards/nrf5340bsim_nrf5340_cpuapp.conf b/samples/bluetooth/central_hr/boards/nrf5340bsim_nrf5340_cpuapp.conf
new file mode 100644
index 00000000000..7ffe275701c
--- /dev/null
+++ b/samples/bluetooth/central_hr/boards/nrf5340bsim_nrf5340_cpuapp.conf
@@ -0,0 +1,3 @@
+# Set same the ACL RX buffer size as in hci_ipc on netcore so that
+# HCI Controller to Host Flowcontrol is supported.
+CONFIG_BT_BUF_ACL_RX_SIZE=255
diff --git a/samples/bluetooth/central_hr/sysbuild.cmake b/samples/bluetooth/central_hr/sysbuild.cmake
new file mode 100644
index 00000000000..2523aac8ea7
--- /dev/null
+++ b/samples/bluetooth/central_hr/sysbuild.cmake
@@ -0,0 +1,24 @@
+# Copyright (c) 2023 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+if(SB_CONFIG_NET_CORE_IMAGE_HCI_IPC)
+	# For builds in the nrf5340, we build the netcore image with the controller
+
+	set(NET_APP hci_ipc)
+	set(NET_APP_SRC_DIR ${ZEPHYR_BASE}/samples/bluetooth/${NET_APP})
+
+	ExternalZephyrProject_Add(
+		APPLICATION ${NET_APP}
+		SOURCE_DIR  ${NET_APP_SRC_DIR}
+		BOARD       ${SB_CONFIG_NET_CORE_BOARD}
+	)
+
+	set(${NET_APP}_CONF_FILE
+	 ${NET_APP_SRC_DIR}/nrf5340_cpunet_iso-bt_ll_sw_split.conf
+	 CACHE INTERNAL ""
+	)
+
+	native_simulator_set_child_images(${DEFAULT_IMAGE} ${NET_APP})
+endif()
+
+native_simulator_set_final_executable(${DEFAULT_IMAGE})
diff --git a/samples/bluetooth/peripheral_hr/Kconfig.sysbuild b/samples/bluetooth/peripheral_hr/Kconfig.sysbuild
new file mode 100644
index 00000000000..61836cb8855
--- /dev/null
+++ b/samples/bluetooth/peripheral_hr/Kconfig.sysbuild
@@ -0,0 +1,15 @@
+# Copyright 2023-2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+source "share/sysbuild/Kconfig"
+
+config NET_CORE_BOARD
+	string
+	default "nrf5340dk/nrf5340/cpunet" if $(BOARD) = "nrf5340dk"
+	default "nrf5340_audio_dk/nrf5340/cpunet" if $(BOARD) = "nrf5340_audio_dk"
+	default "nrf5340bsim/nrf5340/cpunet" if $(BOARD_TARGET_STRING) = "NRF5340BSIM_NRF5340_CPUAPP"
+
+config NET_CORE_IMAGE_HCI_IPC
+	bool "HCI IPC image on network core"
+	default y
+	depends on NET_CORE_BOARD != ""
diff --git a/samples/bluetooth/peripheral_hr/boards/nrf5340bsim_nrf5340_cpuapp.conf b/samples/bluetooth/peripheral_hr/boards/nrf5340bsim_nrf5340_cpuapp.conf
new file mode 100644
index 00000000000..7ffe275701c
--- /dev/null
+++ b/samples/bluetooth/peripheral_hr/boards/nrf5340bsim_nrf5340_cpuapp.conf
@@ -0,0 +1,3 @@
+# Set same the ACL RX buffer size as in hci_ipc on netcore so that
+# HCI Controller to Host Flowcontrol is supported.
+CONFIG_BT_BUF_ACL_RX_SIZE=255
diff --git a/samples/bluetooth/peripheral_hr/sysbuild.cmake b/samples/bluetooth/peripheral_hr/sysbuild.cmake
new file mode 100644
index 00000000000..2523aac8ea7
--- /dev/null
+++ b/samples/bluetooth/peripheral_hr/sysbuild.cmake
@@ -0,0 +1,24 @@
+# Copyright (c) 2023 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+if(SB_CONFIG_NET_CORE_IMAGE_HCI_IPC)
+	# For builds in the nrf5340, we build the netcore image with the controller
+
+	set(NET_APP hci_ipc)
+	set(NET_APP_SRC_DIR ${ZEPHYR_BASE}/samples/bluetooth/${NET_APP})
+
+	ExternalZephyrProject_Add(
+		APPLICATION ${NET_APP}
+		SOURCE_DIR  ${NET_APP_SRC_DIR}
+		BOARD       ${SB_CONFIG_NET_CORE_BOARD}
+	)
+
+	set(${NET_APP}_CONF_FILE
+	 ${NET_APP_SRC_DIR}/nrf5340_cpunet_iso-bt_ll_sw_split.conf
+	 CACHE INTERNAL ""
+	)
+
+	native_simulator_set_child_images(${DEFAULT_IMAGE} ${NET_APP})
+endif()
+
+native_simulator_set_final_executable(${DEFAULT_IMAGE})