McTavish, Jayson Megna and Jakob Silfverberg scored for Anaheim, with McTavish delivering the decisive marker just past the midway point of the third period. Derek Grant earned the hosts' lone multi-point performance with a pair of assists.
Cam Fowler, Kevin Shattenkirk, Trevor Zegras and Max Comtois also collected assists in the win.
Gibson continued his outstanding second half of the season with the latest in a line of masterful recent performances, stopping 26-of-28 Montreal shots. Across his last five starts, Gibson owns a 3-0-2 record with a .940 save percentage.
Jonathan Drouin and Christian Dvorak scored for Montreal. Goaltender Sam Montembeault made 30 saves in his 13th regulation defeat of the season.
The night got off to a, for lack of a better word, painful start for Anaheim and in particular Gibson. Just over a minute after the opening faceoff, defenseman Mike Matheson fired a shot from the right circle that appeared to catch the goaltender quite uncomfortably in his midsection. With Gibson knelt over in pain as the puck trickled behind him, Drouin got it first, swiping the rebound in an empty net to put Montreal ahead.
The goal snapped an incredible streak for Drouin, who collected each of his first 18 points of the season with assists (0-18=18). Only four forwards in NHL history have recorded more assists before than their first goal of the season: Alex Delvecchio (22, 1969-70), Martin Erat (21, 2013-14), Andrew Cassels (20, 1994-95) and Mathew Barzal (19, 2022-23).
Matheson, who remained with Montreal despite a flurry of trade deadline rumors, has points in six of his last seven games (2-5=7). Despite dealing with two separate injuries this season limiting him to 28 games played thus far, Matheson leads Montreal blueliners in scoring (4-14=18) and assists.
With the secondary assist, winger Josh Anderson now sits three points shy of 200 for his NHL career.
Anaheim answered right back from its early deficit though, scoring on its first shot of the game to pull even. As Comtois raced down right wing, he tried to feather a pass to Megna on the backdoor. Instead, the pass caromed off defenseman Johnathan Kovacevic in front and bounced right to Megna, who swiped it past the sliding Montembeault for his second goal as a Duck.