Originally Posted by
irishguy28
As a general rule, you will always check in with the operating airline of the first/next sector in your day's flying.
You do not check in with Air France just because you bought a ticket from them and/or there is an AF flightcode on the first flight of the day on your ticket.
I can now confirm that AF/VN partnership is an exception to this general rule.
I did OLCI on AF website, was not redirected to VN website and got my BP in a straightforward manner, as if it were an AF metal flight.