It's got to be on the same PNR (with both an inbound and outbound)
I'm still trying to figure out whether you can open jaw at your destination (which would make two one ways on the same PNR with the Saturday night stopover) and still get the bonus.
AP T&C's seem to say that you can so long as the destination is eligible but I don't trust AP to deposit the bonus based on vague T&C's and don't want to have to fight for a MISC credit (which more often than that is not distinction eligible).
Take NYC for example: One could fly into EWR and then depart out of LGA or JFK. Has anyone received distinction bonus for using departing/arriving out of sister airport? What about an open jaw like YYZ-WAS//NYC-YYZ? (both distinction bonus destinations)
My only experience is with RT tickets with the same airport. Which has been credited with no problems.
Anyone else have any experience on this?