At 8:52 of the third period in the Ducks/Predators game, Nashville requested a Coach's Challenge to review whether an Anaheim player interfered with Nashville goaltender Pekka Rinne prior to Cam Fowler's goal.
After reviewing all available replays and consulting with NHL Hockey Operations staff, the Referee confirmed no goaltender interference infractions occurred.

Therefore the original call stands - good goal Anaheim Ducks.
Since the Coach's Challenge did not result in the original call being overturned, the Nashville Predators forfeit their time-out.