...It's unlikely that a band trumpet player for example would be required to hang on to top A for what seems like half an hour while the orchestra tries to wipe him off the stage with a horrible dissonance (as happens in Mahler 10), so anyone playing that piece has my full sympathy.
Ah, but on Tuesday they shared out that note between three of them!
Not daft, these professionals
Not daft, Deryck Cooke - that's indeed how he's laid it out in the finale. Indeed between bars 267 and 287 all four trumpets get a go although the second not quite so prominently as the other three.
Did that happen in the first movement as well then? Makes sense I guess.