no.
I once arrived in JFK from LHR in F and was connecting to LAX in Y on AA (don't ask).
I saw my name on the upgrade list on the screen so enquired how it worked (and I did somehow try to drop into conversation that I had just arrived on BA F) and they removed me from the list as they said I shouldn't have been on there (had no idea what it was at the time - still not entirely sure but assume it was the list for those requesting upgrades and somehow paying for them with vouchers / miles).