Originally Posted by
Hyperacusis
Not sure, but I don't think it would be much of an issue since AA has a codeshare agreement and FF partnership with B6 as well.
That is true. AA reduced BOS market share and B6 gained some when AA BA JV was approaved. Then AA signed codeshare with B6 as B6 is very strong in some leisure markets e.g. Fort Lauderdale as well as a big JFK presence. Also B6 is taking over SJU slowly. Ideally if Merge happens to AA, AA would prefer B6 over US.