Reilly Smith tied the game for Vegas with a goal with eight seconds left. The Golden Knights won 4-2 at the Ottawa Senators in DeBoer's debut Thursday, one day after Gerard Gallant was fired.
"I thought we showed a lot of character," said DeBoer, who was fired by the San Jose Sharks on Dec. 11. "That's a big hole anywhere, particularly in this building, so I thought it didn't rattle us. I actually thought at the end of the first, you know, they earned their goals. We had some opportunities we didn't execute on; we could have had a couple too. So that's a big deficit, we didn't quit, we got to work and scratched out a point, an important point."
WATCH: [All Golden Knights vs. Canadiens highlights]
Nick Cousins scored twice for Montreal (22-21-7), which led 3-0 after one period and 4-2 with 1:58 to play but recovered for its fourth win in five games.
"We definitely don't like making it easy on ourselves," Cousins said.
Carey Price made 31 saves for his fourth straight win with the Canadiens entering the All-Star break.
"It might not have been pretty, but it was exciting for our fans," Montreal coach Claude Julien said. "We got the two points, we'll take them and head off on vacation."