One pass for the entire fall season? I try to collect leaves in my mowers leaf collector one time when the first heavy drop occurs. Then after that it takes at least 3 mowings without the leaf collector to keep things under control so that the residue is chipped finely enough to decay over winter without suffocating the grass.

Per :
One pass for the entire fall season?

No, one pass in a session - but sometimes 3-4 if the leaves are heavy
enough.

I haven't been counting, but I'd guess it's about six mowings in a fall
season. I'd have done four mowings in that period just because of
grass growth.
--
Pete Cresswell