Originally Posted by
nbevan
We now know that AA does protect missed connections from OW to AA, and I have not seen any complaints of BA not protecting a missed connection from AA to BA (though I don't recall reports of successful protection either). So BA policy on this is uncertain.
They may choose to provide protection but it isn't something I would rely on personally; if it is not a fully flexible onward ticket, I would ensure enough time to avoid risk of having to purchase another ticket