This is an interesting and useful followup to the UnitedLex teardown posted earlier: https://semiwiki.com/forum/index.ph...-bionic-soc-n5p-details-from-unitedlex.15273/
A minimum pitch (fin, M0) of 28 nm is confirmed in this teardown, though not in the previous one from UnitedLex (there it looked >~40 nm).
So it looks like a mix of 28-40 nm pitches is possible on a given layer (fin or M0).
However, illumination supporting 28 nm pitch is mostly detrimental to the focus window of 40 nm pitch. So it is an expected multipatterning application.