Originally Posted by
Dark Blue
SQ's First lounge is only open to *A First class passengers, I am curious if AA & CX accept OW Emerald.
OW Emerald has a benefit of allowing first class lounge access, whereas *G does not.
Therefore you'd get access to any OW first class lounge as an Emerald when travelling on a oneworld operated flight.
That's why the lounge BA Golds get access to in T5 is called Galleries First, that's the oneworld first class lounge in T5. The Concorde Room is an additional perk of BA First outside of the oneworld agreement.