Lambert, who was selected in the first round (No. 30) of the 2022 NHL Draft, tied it 3-3 with 3:29 left, and Schmidt scored the game-winner with 18 seconds remaining.
Evan Polei and Cole Maier scored, and David Rittich allowed one goal on 10 shots in two periods for Winnipeg. Arvid Holm came on in the third period and made 13 saves.
Brendan Gallagher and Cole Caufield each had a goal and an assist, and Christian Dvorak had two assists for Montreal. Jake Allen started and allowed one goal on 11 shots in 30:24 before being replaced by Cayden Primeau (11 saves).
Kaiden Guhle
, who was selected in the first round (No. 16) of the 2020 NHL Draft, gave the Canadiens a 1-0 lead at 5:15 of the first period.
Polei tied it 1-1 at 11:05, and Maier put the Jets in front 2-1 at 14:26 of the second period.
Gallagher tied it 2-2 on the power play at 10:08 of the third, and Caufield scored on the man-advantage to make it 3-2 at 11:48.
