diff --git a/nimble/controller/src/ble_ll_conn.c b/nimble/controller/src/ble_ll_conn.c
index a702f35323..1f7b477328 100644
--- a/nimble/controller/src/ble_ll_conn.c
+++ b/nimble/controller/src/ble_ll_conn.c
@@ -2901,6 +2901,10 @@ ble_ll_conn_created(struct ble_ll_conn_sm *connsm, struct ble_mbuf_hdr *rxhdr)
 #if MYNEWT_VAL(BLE_LL_CFG_FEAT_LE_CSA2)
             ble_ll_hci_ev_le_csa(connsm);
 #endif
+#if MYNEWT_VAL(BLE_LL_HCI_VS_CONN_STRICT_SCHED)
+            ble_ll_hci_ev_send_vs_css_slot_changed(connsm->conn_handle,
+                                                   connsm->css_slot_idx);
+#endif
 
             /*
              * Initiate features exchange
diff --git a/nimble/controller/syscfg.yml b/nimble/controller/syscfg.yml
index 517cfe0fdf..4715be6fe6 100644
--- a/nimble/controller/syscfg.yml
+++ b/nimble/controller/syscfg.yml
@@ -428,6 +428,7 @@ syscfg.defs:
         value: 0
         restrictions:
             - BLE_LL_HCI_VS if 1
+            - BLE_LL_CONN_STRICT_SCHED if 1
     BLE_LL_HCI_VS_LOCAL_IRK:
         description: >
             Enables HCI command to set local IRK.