Connor gave Winnipeg a 1-0 lead at 1:24 of the second period with a one-timer from the right face-off circle on a power play before Dadonov tied it 1-1 at 7:46, scoring on a one-timer after receiving a pass from Barron at the bottom of the right circle.
"We weren't able to connect on a lot of plays," Connor said. "We were kind of disjointed throughout the whole ice, all three zones, not one zone in particular. They were able to counter on us pretty good, catch us on some bad changes. We just weren't taking care of each other tonight."
Mike Hoffman made it 2-1 at 9:28 with a wrist shot from the right circle past the blocker of Hellebuyck, and Dadonov extended it to 3-1 at 13:31, scoring on a rebound.
Josh Anderson made it 4-1 at 4:19 of the third period, putting in the rebound after Dach tried to score on a wraparound.
"I think the biggest part was we didn't spend a lot of time in our zone," Montreal defenseman Mike Matheson said. "It didn't seem like there were any long shifts where they really sustained pressure against us and [were] generating a lot of chances. So that's a great way to play when you're kind of cutting those down and going on offense with energy and possession."