Agree with the comments about some of the gamemanship, mainly by Athletico, but I did feel a bit sorry for them with regards to the multi ball system being used. Usually when the ball goes out of play, you do get a few seconds to recover and get back into shape, but with another ball arriving immediately the first one went out of play, there was never any breaks. If the ball goes into the stands for a goal kick, is the keeper really required to take the kick immediately just because the home team have given him a different ball to use! Not suggesting that they should be allowed to waste time excessively, but there would usually be a few seconds before the ball comes back....
I assume that the home team gets to decide on multi ball / single ball? Would Bayern have been allowed to change to single ball if they'd gone ahead?