Originally Posted by RupertC

Yep.

International F (BA) connecting to domestic F (AA), and return. The return international sector was in J (BA). All for GBP2600. The other sectors were unrelated, but all in domestic F. That makes up the other spend/miles/sectors.

I can't help but feel that the recent changes in the AAdvantage programme have a subtle earnings bias against flying with partner airlines. Fair enough: it is a loyalty programme after all.