So the flight time is likely to be relatively short and the FL fixed.
Yes I agree. You would be unlucky to be an hour away from landing as you won't be EDTO if you dispatched that way, however, there is a big difference between 30 minutes with 45 pax onboard and 60 minutes with 170 POB.
I think trying to pre-calculate temperatures is over-analysing things.
Fair enough.every brain is different. I'm not actually trying to have an exact figure in my mind, I'm fishing for information as to weather it will be intolerable from someone who knows. Maybe nobody on this site knows and all we'll get is guesses, that's fine too, I enjoy the process
My best guess is that it will become intolerable and we would in fact end up slowing and opening the F/O's window.