Originally Posted by
Calchas
I believe it's an agreement between all partners in oneworld, that they will cross-protect bookings made between themselves and other members, even on unconnected tickets.
To my knowledge, none of the other partners state publicly they will uphold the arrangement.
The arrangement is not public and we do not know exactly what the terms of it are.
Most unfortunately, that is definitely not the case. I have had experiences to the contrary on a BA/LA connection and have family members who have even had experiences to the contrary on a BA/BA connection! Both cases separate tickets.
It is most definitely only a AA policy and not one which affects or would be systematically implemented by any other OW partner. They can occasionally be helpful as a gesture of good will (the same way I have had similar courtesy occasionally extended on separate reservations by airlines which are not even in the same alliance, such as separate DL-LH itineraries) but it is only a policy (publicised or not) for AA.