Originally Posted by
snuggliestbear
In this case ACflyerDE is right, if you are on separate tickets you won't have any protection. You'll be at the mercy of how nice the GA or airline rep is feeling to re-accommodate you.
However if you were flying OW airlines you would be protected, even if you were on separate tickets. Something to remember for next time perhaps.
Oh, and welcome to FlyerTalk!
The BA people seem to think that the protection guarantee is only on AA for OW multiple tickets and not for other OW carriers. In other words, if you are flying BA connecting to AA on separate tickets, AA will protect you while, if flying AA to any other OW carrier on separate tickets, you won't be protected other than as a matter of CS.