2 Part Technique - The opponent may focus on protecting his neck while not escaping. Since you no longer need a strong Seat Belt control to prevent his escape, search for the submission. If the opponent attempts to grab your hand, pull away while continuing to find his neck open. Grabbing behind the opponent's shoulder gives the time needed to peel away his second attempt at blocking your choke. The opponent might control your non choking arm, so pulling back with your elbow will either submit him or force him to release it, giving the full Rear Naked Choke.