Originally Posted by
Ldnn1
...you may also want to see if you can force the whole thing on BA flight numbers for the same price to get the avios benefit. Doing so would also mean the AA flights count as eligible flights for status purposes, if tou need those.
Putting "ba675 lhr aa,ba lax aa,ba" into ITA's outbound routing codes doesn't find a BA code for AA135, but routes onto BA269 an hour later, which then picks up AA35 as BA8668. No price difference in Club for the random date I chose next May. May not be the same for OP depending on availability.