Leason made it 2-0 at 5:44 when he scored on a wrist shot from the right face-off dot off the rush.
Gauthier extended the lead to 3-0 at 7:39 of the second period on a power-play goal from the slot.
“This type of game is going to happen to everybody in the league at some point. Over an 82-game schedule, you’re going to have a game where you’re either off, flat or get behind and can’t come back,” Dallas coach Pete DeBoer said. “It’s over with, there’s nothing we can do about it now. It’s all about our response.”
Lindell cut the lead to 3-1 at 3:31 of the third, finishing off a passing play with a one-timer from the high slot.
“You have to prepare every night. [Our] pre-scout said they’re going to come out hard, play physical and compete. We didn’t match that tonight,” Lindell said. “We’ve got to bounce back. When we ramp up the compete, it’s going to help our game and results.”