So my company has somehow managed to book me a single ticket, with an A3 flight number on the first leg and an AF flight number on the second leg, despite the two airlines being in separate alliances. Didn't know this was possible!

Firstly, if I ask at check-in, can they record my UA FF# on the first sector and my Flying Blue # on the second sector? Presumably there is no way to accumulate Flying Blue miles on the A3 flight or vice versa?

Secondly, any idea which lounge(s) I might be entitled to access in CDG bearing in mind I arrive Star Alliance and depart Sky Team? I've never flown AF in J so I have no idea if there is any particular lounge at CDG better than the rest. I have a 3 hour connection and so willing to walk if required.

Thanks!