The longest possible chess game can theoretically last for 5,949 moves! This would be under the "50-move rule" (where no pawn is moved and no capture is made for 50 consecutive moves). It's a mind-boggling scenario, as it illustrates how deep and complex chess strategy can be, even if the game isn't progressing toward a checkmate!"
Technically, the 50 move rule only applies if one of the players wants it to, only the 75 move rule is forced, so a game much longer could be possible (not on chess.com though lol)