A message from the northern hemisphere.
Just a thought. All European and North-American airlines fly Chicago - Amsterdam, and numerous other city pairs, like this. All time zone differences of 6 or more hours, with flighttimes less than 8 hours. ALL are done with two pilots, no exceptions. It is not called LH let alone ULH.
The timezone differences will give you more time off in relation to north - south flights, as your circadian rythm will be disturbed.
So, in my humble view, I cannot understand anyone claiming a 7 hour flight a ULR. I think it is a misunderstanding of your AFTL's and that the wording of it need some improvement.