No, they’re not. The bays were formed and the black mat was laid down at that time; various erosional events came later, and uniformitarian jokers messed up the dating, even when they actually did field work.
Figuring out how to get different entry angles for a single event is rather difficult. Two events explain things easier, and a comet breakup is a well known phenomenon. In fact, many of our best shooting star events are simply us taking a trip through a comet's path (over and over and over).