At 18:36 of third period in the Bruins/Maple Leafs game, Boston requested a Coach's Challenge to review whether Zach Hyman interfered with goaltender Tuukka Rask prior to Ron Hainsey's goal.

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