Dallas started fine, even when it took a penalty just 2:41 into the game. The fifth-ranked penalty kill looked fantastic, and the Stars appeared to have learned their lesson and also gained a bit of confidence during the kill.
But, Mattias Janmark doubled down and took a hipping-style trip 7:11 into the first period for the team's second penalty. Eight seconds later, Steven Stamkos scored from the left circle, and the rout was on for the Lightning.
Mikhail Sergachev lifted a shot past Anton Khudobin, who was scrambling in and out of the net, at the 12:39 mark, and then Tyler Johnson flipped a puck past Khudobin as the goalie was caught in no man's land.
That brought Landon Bow into the game, and pretty much made the statement this wasn't going to be Dallas' night.
Montgomery said he told Khudobin he would go back in the game to start the second period, but by then it was 4-0.
Tampa Bay scored twice in the second period, including one more on the power play, and then Khudobin took a seat to get ready for the possibility he might play Saturday at Carolina. Plus, Bow got some good ice time against the best team in the league.
And as hard as it was to look at the positives in this one, that was exactly what Montgomery said he wanted to do.
"I liked our effort. I didn't like our puck management, but we'll get better from this, we'll learn from this," Montgomery said. "When you get your rear end handed to you from the best team in the league, you learn and you get better, and we will get better.
"This time of year, we focus on the positives, and it's about building the right way, and that's what we're going to do."