I need to have the rotation on the pitch do the same as on yawn, continuous -inf to +inf, therefore ending half of the time upside down.
This is not possible because positions upside down simply cannot be used (-90 to +90 only) without changing roll.
I have the impression that computing pitch and roll in the limited range using calculations from a tweening -inf+inf variable is possible, to cover all positions, refreshing at each frame, using asyncloop.

Anyone having some alternate thinking ideas?

Ok that does the job. I experimented for some time.
There is a limit for vlookat from -100000 to +100000 for some reason.