It's several years since I have been to an airshow anywhere and more years than I care to remember since I went to one in the UK.
I would be interested to know how the "air boss" runs things at a big show in the UK, Duxford for example. Is it pretty much radio silent?
PS I have to say that if I was one of the formation leads at Dallas, I would have been tempted to call "Knock it off".