Originally Posted by
Rami Tamimi
You are absolutely right,in oneworld it's the operating airline that pays for access,whereas in Star Alliance and Skyteam it's the FFP which pays.
This seems inconsistent for ST, where DL no longer provides "third party" lounge access (ie: those not operated by a ST airline), but DL STE+ report access to such lounges when flying on non-DL metal (ie: operating carrier would be paying).