At 7:27 of the first period in the Lightning/Bruins game, Boston requested a Coach's Challenge to review the "Interference on the Goalkeeper" decision that resulted in a "no goal" call.

After reviewing all available replays and consulting with NHL Hockey Operations staff, the Referee determined that Boston's Brad Marchand did not interfere with Tampa Bay goaltender
Andrei Vasilevskiy
before the puck crossed the goal line.
Therefore the original call is overturned - good goal Boston Bruins.
Since the Coach's Challenge resulted in the original call being overturned, the Bruins retain their time-out.