Jaroslav Halak made 33 saves for the Bruins (23-14-4), who have won six of their past eight games, including a 4-2 win against the Chicago Blackhawks in the 2019 Bridgestone NHL Winter Classic on Tuesday.
"That was our main focus, obviously after a big event, a big game like that, you want to continue to build success and your brand of hockey," DeBrusk said. "I thought we did a good job of that tonight considering how deep and good they are, they had some spurts that they were coming at us. But it was a big team effort from everybody, we had some big blocks at key times and also big saves. So it was just a matter of trying to score and respond when they score and then play defensively."
WATCH: [All Flames vs. Bruins highlights\]
Johnny Gaudreau had one goal and one assist, and Mike Smith made 21 saves for the Flames (25-13-4), who had won two in a row and three of four.
"When you're chasing from behind, we've had some success throughout the season there, but it doesn't always go your way when you're down a goal or two trying to battle back throughout the game," Gaudreau said.
Michael Frolik gave the Flames a 1-0 lead with a shorthanded goal at 7:46 of the first period. Frolik exited the box when he got to a rebound of Mark Jankowski's shot and scored on a backhand.
The Bruins tied it at 1-1 at 9:02 on a power-play goal by John Moore from the right circle.