The puzzles don't require a lot
of simultaneous movement, they just requre that players be able to mentally deal with two different characters...
«To that end, where I tried to give him meaningful advice, I said he was slow off the ball at times, and what I meant by that term is you have to come off that edge
in simultaneous movement with the ball.
Later, researchers rated the videotaped interactions based on how «in sync» the pair was by examining their behavioral synchrony: that is, the degree
of simultaneous movement, tempo similarity, and coordination / smoothness present.