Cooper said it was a "predatory hit," according to NHL.com's Brian Burns.
Bennett received a two-minute minor for charging on the play, and the penalty marked a significant momentum shift in the game. Brayden Point scored on the ensuing power play to tie the contest in the third period, and then he potted the game-winner just under six minutes later.
Game 2 is set for Tuesday night at 8 p.m. ET.