"You do not have to be departing on a flight of the airline whose lounge you want to use. You don't have to be departing from the airport at which the lounge is located, so you can use it on arrival as well - subject to immigration, etc., restrictions on access to its location."
Agreed, you can use any OW lounge as long as travelling on a OW carrier, however access based on OW sapphire/emerald status is only permitted when departing from that airport on a OW flight. Access is not available for arrivals.
Dave
[This message has been edited by Dave Noble (edited 05-08-2002).]