At 8:05 of the second period in the Maple Leafs/Capitals game, Toronto requested a Coach's Challenge to review whether Washington's Jay Beagle interfered with goaltender Frederik Andersen prior to John Carlson's goal.

After reviewing all available replays and consulting with NHL Hockey Operations staff, the Referee confirmed no goaltender interference infractions occurred.
Therefore the original call stands - good goal Washington Capitals.
Since the Coach's Challenge did not result in the original call being overturned, the Toronto Maple Leafs forfeit their time-out.