diff --git a/connectivity/FEATURE_BLE/source/generic/GapImpl.cpp b/connectivity/FEATURE_BLE/source/generic/GapImpl.cpp
index f28e4da1e1..789ec49eca 100644
--- a/connectivity/FEATURE_BLE/source/generic/GapImpl.cpp
+++ b/connectivity/FEATURE_BLE/source/generic/GapImpl.cpp
@@ -2318,48 +2318,6 @@ bool Gap::isPeriodicAdvertisingActive(advertising_handle_t handle)
 #endif
 #endif
 
-
-void Gap::on_enhanced_connection_complete(
-    hci_error_code_t status,
-    connection_handle_t connection_handle,
-    connection_role_t own_role,
-    connection_peer_address_type_t peer_address_type,
-    const ble::address_t &peer_address,
-    const ble::address_t &local_resolvable_private_address,
-    const ble::address_t &peer_resolvable_private_address,
-    uint16_t connection_interval,
-    uint16_t connection_latency,
-    uint16_t supervision_timeout,
-    clock_accuracy_t master_clock_accuracy
-)
-{
-    if (own_role == connection_role_t::CENTRAL) {
-        _initiating = false;
-    }
-
-    if (!_event_handler) {
-        return;
-    }
-
-
-    _event_handler->onConnectionComplete(
-        ConnectionCompleteEvent(
-            (status == hci_error_code_t::SUCCESS) ? BLE_ERROR_NONE : BLE_ERROR_INTERNAL_STACK_FAILURE,
-            (connection_handle_t) connection_handle,
-            own_role,
-            (peer_address_type_t::type) peer_address_type.value(),
-            peer_address,
-            local_resolvable_private_address,
-            peer_resolvable_private_address,
-            conn_interval_t(connection_interval),
-            connection_latency,
-            supervision_timeout_t(supervision_timeout),
-            master_clock_accuracy.get_ppm()
-        )
-    );
-}
-
-
 void Gap::on_extended_advertising_report(
     advertising_event_t event_type,
     const connection_peer_address_type_t *address_type,
diff --git a/connectivity/FEATURE_BLE/source/generic/GapImpl.h b/connectivity/FEATURE_BLE/source/generic/GapImpl.h
index 522f797e67..5333907fd8 100644
--- a/connectivity/FEATURE_BLE/source/generic/GapImpl.h
+++ b/connectivity/FEATURE_BLE/source/generic/GapImpl.h
@@ -440,20 +440,6 @@ private:
         phy_t rx_phy
     ) override;
 
-    void on_enhanced_connection_complete(
-        hci_error_code_t status,
-        connection_handle_t connection_handle,
-        connection_role_t own_role,
-        connection_peer_address_type_t peer_address_type,
-        const ble::address_t &peer_address,
-        const ble::address_t &local_resolvable_private_address,
-        const ble::address_t &peer_resolvable_private_address,
-        uint16_t connection_interval,
-        uint16_t connection_latency,
-        uint16_t supervision_timeout,
-        clock_accuracy_t master_clock_accuracy
-    ) override;
-
     void on_extended_advertising_report(
         advertising_event_t event_type,
         const connection_peer_address_type_t *address_type,
diff --git a/connectivity/FEATURE_BLE/source/pal/PalGap.h b/connectivity/FEATURE_BLE/source/pal/PalGap.h
index 1a844f8d4c..ca538de892 100644
--- a/connectivity/FEATURE_BLE/source/pal/PalGap.h
+++ b/connectivity/FEATURE_BLE/source/pal/PalGap.h
@@ -58,59 +58,6 @@ public:
         ble::phy_t rx_phy
      ) = 0;
 
-    /**
-     * Should be invoked by the PalGap implementation when an enhanced
-     * connection complete event happens.
-     *
-     * @param status hci_error_code::SUCCESS in case of success or an error
-     * code.
-     *
-     * @param connection_handle The handle of the connection created.
-     *
-     * @param own_role Indicate if the local device operates as slave or
-     * master.
-     *
-     * @param peer_address_type Type of address of the peer.
-     *
-     * @param peer_address Address of the peer connected.
-     *
-     * @param local_resolvable_private_address Resolvable private address
-     * being used by the controller. If not applicable, the address is full
-     * of zeroes.
-     *
-     * @param peer_resolvable_private_address Resolvable private address
-     * being used by the peer. If not applicable, the address is full of
-     * zeroes.
-     *
-     * @param connection_interval Interval between two connection events.
-     * Unit is 1.25ms.
-     *
-     * @param connection_latency Slave latency for the connection in number
-     * of connection events.
-     *
-     * @param supervision_timeout Connection supervision timeout. Unit is
-     * 10ms.
-     *
-     * @param master_clock_accuracy This parameter is only valid for a slave.
-     * On a master it must be set to 0x00.
-     *
-     * @note: See Bluetooth 5 Vol 2 PartE: 7.7.65.10 LE enhanced connection
-     * complete event.
-     */
-    virtual void on_enhanced_connection_complete(
-        hci_error_code_t status,
-        connection_handle_t connection_handle,
-        connection_role_t own_role,
-        connection_peer_address_type_t peer_address_type,
-        const address_t &peer_address,
-        const address_t &local_resolvable_private_address,
-        const address_t &peer_resolvable_private_address,
-        uint16_t connection_interval,
-        uint16_t connection_latency,
-        uint16_t supervision_timeout,
-        clock_accuracy_t master_clock_accuracy
-     ) = 0;
-
     /** Called on advertising report event.
      *
      * @param event_type Type of advertising used.