At 19:23 of the second period in the Flyers/Red Wings game, Detroit requested a Coach's Challenge to review whether a Philadelphia player interfered with Detroit goaltender Petr Mrazek prior to Jakub Voracek'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 Philadelphia Flyers.
Since the Coach's Challenge did not result in the original call being overturned, the Detroit Red Wings forfeit their time-out.