Connected CFU-MUC, MUC-ZRH, ZRH-LAX (overnight in MUC). Agent in CFU asked for test or vaccination paperwork. I only handed over the test I received the day before, which she looked over and handed back. I was never asked for anything again beyond that point and have no idea what would have happened if I handed over vaccination documentation instead (I could have technically got tested the following day in MUC, but tests were cheap and easy in CFU). While waiting to board in ZRH, there was a woman at the gate desk being informed that she needed to have a test to board the flight. It was quite a dramatic conversation, and she clearly had no idea about the requirement (or was playing dumb???). I will be very grateful when this absurd requirement is finally shelved, but I seriously doubt that will be happening until the current USA surge passes. My next flight back to the USA will be in early August, and I am starting to fear that I will be needing a test for that flight as well.