Alex Newhook gave the Canadiens a 1-0 lead at 11:32 of the first period. His one-timer from the right side on a 2-on-1 pass from Gallagher went in off Reimer’s outstretched glove.
Mailloux, who was recalled from Laval of the American Hockey League on Monday, had the secondary assist for his first NHL point.
“It’s a little weight off the shoulders, it makes the legs feel a little better too,” Mailloux said. “It was a nice play by [Joel] Armia on the wall and then I saw 'Gally' going and I hit him and he made a hell of a sauce over to 'Newie,' so it was a nice play.”
Seider tied it 1-1 at 18:29 with a one-timer glove side on Primeau off Larkin’s pass back to the point.
Gallagher put Montreal up 2-1 at 6:17 of the second period. He swatted the puck over the goal line for his third goal in two games after the rebound of Armia’s shot sat loose in the crease behind Reimer.
Cole Caufield pushed it to 3-1 at 10:09, jamming in a rebound of Slafkovsky’s one-timer from the right face-off circle.
Veleno got the Red Wings to within 3-2 at 10:45, scoring five-hole on the rebound of Shayne Gostisbehere’s shot from the left point.
Sprong tied it 3-3 at 3:31 when his shot from behind the goal line in the right corner banked into the net off Primeau.
Slafkovsky put Montreal up 4-3 at 12:46 of the third period. He was in front of the net to tip in Lane Hutson’s wrist shot from the point.
“I knew it didn’t change direction that much,” Hutson said. “But it was a great tip by him.”
NOTES: Perron’s goal was the third-latest tying goal the Red Wings have scored in the past 10 years. Tomas Tatar scored at 19:58 of the third period on March 3, 2017, just over two months after Anthony Mantha scored a game-tying goal at 19:58 of the third period on Jan. 1, 2017. … It was the third time in Red Wings history they overcame multigoal deficits in games on consecutive days. Detroit previously accomplished the feat Dec. 4-5, 1984, and on Nov. 9-10, 2018. … Slafkovsky is the fifth Canadiens player at the age of 20 or younger to have a 20-goal season. Guy Lafleur (29 goals in 1971-72), Stephane Richer (21 in 1985-86, and 20 in 1986-87), Mario Tremblay (21 in 1974-75), and Bernie Geoffrion (20 in 1951-52) are the others. … Canadiens forward Michael Pezzetta left after his first shift of the game with an upper-body injury.