At 1:58 of the first period in the Hurricanes/Flames game, Carolina requested a Coach's Challenge to review whether Calgary's Derek Ryan interfered with Petr Mrazek prior to Oliver Kylington's goal.

After reviewing all available replays and consulting with the Referee, the Situation Room confirmed no goaltender interference infractions occurred before the puck crossed the goal line.
Therefore, the original call stands - good goal Calgary Flames.
Since the Coach's Challenge did not result in the original call being overturned, the Carolina Hurricanes forfeit their time-out.