Originally Posted by
guv1976
There is a whole big discussion going on right now in the FT AA forum about AA's protection on separate AA-oneworld tickets. In any event, if any carrier had to rebook you in the scenario you describe, it would be the late-delivering carrier -- AA in your case -- and not IB.
Here's the thread:
AA ignores oneworld protection when mech causes delay
And the AA thread before that :--
AA Protection on separate oneworld tickets / PNR
The new thread some what supersedes the old thread