Apologies if this has been covered; my search didn't yield much.

I have a flight SFO-LAX-LHR-LAX-SFO, as a CO (UA) Ticket. The SFO-LAX legs are on UA (in First) and the LAX-LHR legs are on VS in (UC) so a few questions

1) Given that the first leg is the start of an international biz ticket, will I get lounge access at SFO or is the flight just considered domestic?
2) UA is in term 7/8 at LAX and VS is in 2, is there an all airside transfer or will I need to clear security?
3) Does anyone know what the lounge is for VS UC pax at LAX?
4) On the return, I have a ca. 4 hour layover, will I be able to get access to the UA (or CO) lounge(s) having flown in on an international biz ticket, transferring to a domestic F ticket.
Thanks much

No airside transfer...go outside, catch the bus, reclear security.

NZ

1. No. Because domestic F doesn't get you lounge access unless PS. You are on an international C ticket, but you are flying VS - that is not in *A.
2. See answer from BryanIAH
3. See 2 above
4. No. See 1 above.

Thank you. Perhaps I should have been clearer. The entire itinerary is booked as a CO ticket. So it's *technically* a *A ticket. Does that change 1 and 4?
tnks

Metal matters, not the code on the flight. You are on a VS flight so your benefits are based on that. Sorry.