Another good episode. I also was confused about the timing. As it seemed like they just beat that guy up, but clearly just won the lottery, so how did any know about it?
I forgot that he was in ER, but as soon as it showed the lab coat, yep he's going to pretend to be the doctor. Probably not a call out, but when he was naming random medical stuff as a distraction while moving the guy the bed, it reminded me of Star trek: The voyage home.
I always enjoy Elliot and Parker together. But I agree with Parker, I can see Elliot settling down with her and leaving the life behind.