I think that is just the guys timing...based on the pile on the floor, probably an hour or 2's worth. After a few weeks you would get your giddyup dialed in...at least some people would. This guy is in the zone by the look on his face, even to the point of his toss backward at :09 he knows exactly where its going and still reaching for the next tube, knowing where it is. Economy of motion in 3 part harmony.
Would you make a mistake with that clan member behind you.