diff --git a/subsys/bluetooth/controller/ll_sw/ull.c b/subsys/bluetooth/controller/ll_sw/ull.c
index cac617b5339..5edcf17c154 100644
--- a/subsys/bluetooth/controller/ll_sw/ull.c
+++ b/subsys/bluetooth/controller/ll_sw/ull.c
@@ -1526,25 +1526,15 @@ static inline void rx_demux_conn_tx_ack(uint8_t ack_last, uint16_t handle,
 #if !defined(CONFIG_BT_CTLR_LOW_LAT_ULL)
 	do {
 #endif /* CONFIG_BT_CTLR_LOW_LAT_ULL */
-		struct ll_conn *conn;
-
 		/* Dequeue node */
 		ull_conn_ack_dequeue();
 
 		/* Process Tx ack */
-		conn = ull_conn_tx_ack(handle, link, node_tx);
+		ull_conn_tx_ack(handle, link, node_tx);
 
 		/* Release link mem */
 		ull_conn_link_tx_release(link);
 
-		/* De-mux 1 tx node from FIFO */
-		ull_conn_tx_demux(1);
-
-		/* Enqueue towards LLL */
-		if (conn) {
-			ull_conn_tx_lll_enqueue(conn, 1);
-		}
-
 		/* check for more rx ack */
 		link = ull_conn_ack_by_last_peek(ack_last, &handle, &node_tx);
 
diff --git a/subsys/bluetooth/controller/ll_sw/ull_conn.c b/subsys/bluetooth/controller/ll_sw/ull_conn.c
index e36427abbac..92d209d902a 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_conn.c
+++ b/subsys/bluetooth/controller/ll_sw/ull_conn.c
@@ -1386,10 +1386,8 @@ void ull_conn_lll_ack_enqueue(uint16_t handle, struct node_tx *tx)
 	MFIFO_ENQUEUE(conn_ack, idx);
 }
 
-struct ll_conn *ull_conn_tx_ack(uint16_t handle, memq_link_t *link,
-				struct node_tx *tx)
+void ull_conn_tx_ack(uint16_t handle, memq_link_t *link, struct node_tx *tx)
 {
-	struct ll_conn *conn = NULL;
 	struct pdu_data *pdu_tx;
 
 	pdu_tx = (void *)tx->pdu;
@@ -1397,32 +1395,32 @@ struct ll_conn *ull_conn_tx_ack(uint16_t handle, memq_link_t *link,
 
 	if (pdu_tx->ll_id == PDU_DATA_LLID_CTRL) {
 		if (handle != 0xFFFF) {
-			conn = ll_conn_get(handle);
+			struct ll_conn *conn = ll_conn_get(handle);
 
 			ctrl_tx_ack(conn, &tx, pdu_tx);
 		}
 
-		/* release mem if points to itself */
+		/* release ctrl mem if points to itself */
 		if (link->next == (void *)tx) {
-
 			LL_ASSERT(link->next);
 
 			mem_release(tx, &mem_conn_tx_ctrl.free);
-			return conn;
+			return;
 		} else if (!tx) {
-			return conn;
+			/* Tx Node re-used to enqueue new ctrl PDU */
+			return;
 		} else {
 			LL_ASSERT(!link->next);
 		}
-	} else if (handle != 0xFFFF) {
-		conn = ll_conn_get(handle);
-	} else {
+	} else if (handle == 0xFFFF) {
 		pdu_tx->ll_id = PDU_DATA_LLID_RESV;
+	} else {
+		LL_ASSERT(handle != 0xFFFF);
 	}
 
 	ll_tx_ack_put(handle, tx);
 
-	return conn;
+	return;
 }
 
 uint8_t ull_conn_llcp_req(void *conn)
diff --git a/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h b/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h
index 181079f9a1e..2f2eb2b54cb 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h
+++ b/subsys/bluetooth/controller/ll_sw/ull_conn_internal.h
@@ -33,7 +33,6 @@ memq_link_t *ull_conn_ack_peek(uint8_t *ack_last, uint16_t *handle,
 memq_link_t *ull_conn_ack_by_last_peek(uint8_t last, uint16_t *handle,
 				       struct node_tx **tx);
 void *ull_conn_ack_dequeue(void);
-struct ll_conn *ull_conn_tx_ack(uint16_t handle, memq_link_t *link,
-				struct node_tx *tx);
+void ull_conn_tx_ack(uint16_t handle, memq_link_t *link, struct node_tx *tx);
 uint8_t ull_conn_llcp_req(void *conn);
 void ull_conn_upd_curr_reset(void);