While Game 2 between the Chicago Blackhwaks and St. Louis Blues was thrilling, a lengthy stoppage in play had a huge role in the outcome.

With eight minutes remaining, it looked as though St. Louis had taken a 2-1 lead on a goal by Vladimir Tarasenko, but after a drawn-out review following a coach's challenge, the play was determined offside, reversing the call on the ice.

The change of fortunes took the air out of the Scottrade Center, and the arena fell silent minutes later after Andrew Shaw's goal - which was also challenged and reviewed - gave Chicago the lead. The Blackhawks ultimately prevailed 3-2 to tie the series.

The coach's challenge was introduced to the NHL this season, and although the right call was made Friday, neither captain was thrilled by the length of process.

"It's not easy," Blackhawks captain Jonathan Toews said, according to Chris Kuc of the Chicago Tribune. "It definitely is frustrating for both teams to have to wait that long. If we're going to get the bounce we'll wait as long as we have to, I guess. There's no doubt that to a certain degree it takes a little bit away from the energy of the building."

He added, "It's been predicted and talked about that that might happen in the playoffs. We were the benefactors in that situation."

In the other ear of the referee awaiting a decision was Blues captain David Backes.

"It was a five- or six-minute review," Backes said. "It felt like forever. ...

"When it goes your way, you love it. When it doesn't go your way, it's the worst rule created. But it's one of those things where you want it called right. I don't know if they need the football (way) under the hood and a time limit and (if) they haven't had evidence after the time limit, you move on with life and you keep playing."

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