Originally Posted by
srbrenna
I went to Hawaii on an itinerary that was ticketed by AA (much cheaper than BA for the same itinerary) and the flights posted in 3-4 days so you should be OK for lounge access on the way back.
...assuming the 90TPs they already have include at least two flights marketed by BA, operated by BA, marketed&operated by IB, or whatever other types of flights qualify for the four-segment minimum these days