F9 2538 then AA 6578 at Philadelphia
Tampa → Philadelphia → Allentown
Timetable, Philadelphia time
11:15F9 2538 from Tampa at the gate
10:30AA 6578 to Allentown leaves the gate
23 h 15 apart on the timetable, overnight
AA 6578 leaves 23 h 15 after F9 2538 arrives on the timetable: more than half a day, so not a connection we count.