Good response and the hourly averaging thing is always dubious. I’ve seen companies say that flight pay is in place of extra hours worked.
I also new a base manager that was sent an email that said he was not really a manager so was not entitled to the management benefits. Many years later when he left and asked for all his extra hours to be paid he was told that as a manager he was not paid that way. He pulled his old email that stated he was not a manager and burned them for over 10,000 grand. Companies can’t have it both ways although they will always try. Cheers.