Originally Posted by
bennos
Furthermore, if (as rumored) B6 offers onward connectivity from LON into Europe somehow, they'll be a step ahead of DL/VS, which still doesn't have a good connectivity solution on the European side.
VS interlines with BA, though it's not particularly easy to buy a ticket, you have to call VS or use a TA (some OTAs might be able to book). I did JFK-LHR-GVA on VS/BA recently. It's also not the most seamless experience, you have to effectively manage the reservations separately (e.g., for seat assignments) and OLCI doesn't work well.
But of course connecting via CDG/AMS on AF/KL can get you to at least as many places.