Coach's Challenge: OTT @ PIT - 17:32 of Third Period

At 17:32 of the third period in the Senators/Penguins game, Ottawa requested a Coach's Challenge to review whether Pittsburgh was off-side prior to Bryan Rust's goal.
After reviewing all available replays and consulting with the Linesman, NHL Hockey Operations staff determined that the Penguins entered the attacking zone legally prior to the goal.

Therefore the original call stands - good goal Pittsburgh Penguins.
Since the Coach's Challenge did not result in the original call being overturned, the Ottawa Senators forfeit their time-out.