Lounge Access Question
 

Question about Lounge Access.

I will soon be flying OSL-LHR-JFK soon, with the OSL-LHR segment on SAS (ticketed on BD codeshare) and then the LHR-JFK segment on AA.
Will my OneWorld Emerald status get me into the BA Lounge in OSL, as I am flying a OW marketed and operated flight later that same day, but just not right then and from the same city as the lounge?

The flights are on the same ticket/same PNR, if that matters.

No...

You have no access rights since you are not departing from that airport on an OW flight. As it does say on the OW site

"At peak periods, access to certain lounges may be restricted due to capacity constraints. Access is available on the day of departure when your next onward flight is with a oneworld member airline. Access may not apply at a limited number of third-party-operated lounges. "