After reviewing all available replays and consulting with the Referee, the Situation Room confirmed the "no goal" call because the actions of Vegas' Tomas Nosek caused Chicago's Andreas Martinsen to contact Corey Crawford prior to the puck crossing the goal line. The decision was made in according to Rule 69.1 which states, in part, that "If a defending player has been pushed, shoved, or fouled by an attacking player so as to cause the defending player to come into contact with his own goalkeeper, such contact shall be deemed contact initiated by the attacking player for purposes of this rule, and if necessary a penalty assessed to the attacking player and if a goal is scored it would be disallowed."
Therefore, the original call stands - no goal Vegas Golden Knights.
Since the Coach's Challenge did not result in the original call being overturned, the Golden Knights forfeit their time-out.