3. NYC Subway
Photo courtesy of Netflix
During the hangout at the Knickerbocker Bar, Nicole sees Mary Ann (Brooke Bloom) go to speak to Charlie. We learn in the Marriage Story that Charlie had an affair (maybe just once, maybe more) with Mary Ann. Upon seeing this, Nicole leaves in a rush but Charlie follows her. They head home on the subway (accurately, looks like the B or Q here, which would go over the Manhattan Bridge to Brooklyn). The scene is telling, because anybody else on the train would think they were strangers to each other.