@inoru_no_hoshi
Some of the being-all-over-each-other is probably fanservice that they turn on for the cameras.
I do not have fixed opinions on whether it happens more frequently or less frequently when the cameras are off.
Theory: some of the handsy stuff is misdirection. There may be legit offscreen stuff happening too, but we don't know who's involved or what they do because of all the pretending they do in front of cameras