Originally Posted by
porphyra
Similar to above, I assume with Platinum Pro (Oneworld Emerald) you should be able to access any Oneworld lounge in JFK when flying Transatlantic in Economy. In JFK, does that mean AA Flagship as well as BA and potentially others?
Certainly the FL lounge and you -should- get access to two of the three BA lounges - Soho and one other. Chelsea is apparently the F class lounge only.