American Airlines has increasingly become a domestic airline. Even though it’s the largest airline, it’s less of a global airline even than it was prior to the pandemic. They don’t fly as much to Europe and they haven’t built back much of their flying to Asia.
In fact they no longer consider Los Angeles to be their gateway to Asia, and a lot of their flying to secondary cities in Europe has been halted. That’s meant a real reduction in activity in Philadelphia, where those Europe flights were based, since domestic connections were optimized to support those transatlantic trips as well.