Dylan Holloway scored and had two assists, and Pavel Buchnevich had a goal for St. Louis (11-12-7), which has won four of six, including a 2-1 win at the Ottawa Senators on Saturday. Jordan Binnington made 23 saves.
Noah Dobson had a goal and an assist, and Cole Caufield and Lane Hutson each scored for Montreal (15-10-3), which had won two straight.
Jakub Dobes made 14 saves in his second of back-to-back starts for the Canadiens with Sam Montembeault ill and unavailable to play. Dobes made 22 saves and turned aside two of three Toronto Maple Leafs shooters in a 2-1 shootout win Saturday.
Schenn gave the Blues a 1-0 lead with a power-play goal at 8:57 of the first period. Cam Fowler's point shot was deflected in the slot by Canadiens defenseman Mike Matheson directly to Schenn, who buried it from the bottom of the right face-off circle.
Hutson tied it 1-1 at 12:20 when he snuck behind the defense and went forehand-backhand for the finish around Binnington's left pad. Jared Davidson got a secondary assist on the goal for his first NHL point in his eighth game.
Caufield gave the Canadiens a 2-1 lead at 19:03, snapping a one-timer past Binnington blocker side from low in the right face-off circle. With the goal, Caufield matched his career-long point streak of 11 games (also Jan. 11-Feb. 4, 2024). Caufield has 13 points (four goals, nine assists) during the longest active streak in the NHL.
The Blues scored twice in a span of 39 seconds to take their second lead 1:05 into the second period.
Holloway scored just 26 seconds into the second to tie it 2-2. He took a pass from Schenn on a 2-on-1 and deked Dobes as he cut across the goalmouth and roofed a backhander.
Buchnevich put the Blues ahead 3-2 at 1:05, scoring with a snap shot blocker side on Robert Thomas’ pass from below the goal line.
Schenn made it 4-2 at 10:24 of the third when he scored on a one-timer from the right circle side on a feed from Holloway.
Dobson cut the deficit to 4-3 at 16:15 when his one-timer from just above the left circle flutterd past Binnington into the top right corner.
Binnington denied Caufield's attempt from in tight to tie the game at the buzzer with a last-second left pad save.