AA 6131 then AA 9953 at Philadelphia
Buffalo → Philadelphia → Charlotte
Timetable, Philadelphia time
08:29AA 6131 from Buffalo at the gate
07:45AA 9953 to Charlotte leaves the gate
23 h 16 apart on the timetable, overnight
AA 9953 leaves 23 h 16 after AA 6131 arrives on the timetable: more than half a day, so not a connection we count.