Man, I looked at the pictures, blew them up on my screen, tried to analyze facial features, hair lines, everything, and I have no clue. Looks like both of them. Even thought, that window looks to be 7 feet high, and how far under it is the top of the head (3 inches for coach, 1 inch for KM?).
There is more to this story, need more detective work. Biggest clue may be the sweatsuit.