Yeah after the restart, Rashford played Shaw plenty of times. In most cases, it won't end up with the goal so people don't remember that. Also not every overlapping run will end up with attacker passing the ball, if that's the case it's easier to defend. It's always the case with any combination, players make runs, dummy runs to drag defenders.
They have added few basic passes too (which sort of spoils the video), we have seen Rashford playing those slipping passes many times.
Also UtdArena plotted those incisive passes and all of them after restart and it was till October only (So it's just 2-3 months data). Not all of them to Shaw
Anyways Shaw makes it easier for the player playing on that side, Shaw combined well with Martial too.