Coach's Challenge: NYI @ WSH - 1:46 of the Third Period

At 1:46 of the third period in the Islanders/Capitals game, New York requested a Coach's Challenge to review whether a Washington player interfered with New York goaltender Jaroslav Halak prior to Alex Chiasson's goal
After reviewing all available replays and consulting with NHL Hockey Operations staff, the Referee confirmed no goaltender interference infractions occurred before the puck crossed the goal line.

Therefore the original call stands - good goal Washington Capitals.
Since the Coach's Challenge did not result in the original call being overturned, the New York Islanders forfeit their time-out.