AA 1203 then AA 5398 at Charlotte
Buffalo → Charlotte → Myrtle Beach
Timetable, Charlotte time
14:54AA 1203 from Buffalo at the gate
14:35AA 5398 to Myrtle Beach leaves the gate
23 h 41 apart on the timetable, overnight
AA 5398 leaves 23 h 41 after AA 1203 arrives on the timetable: more than half a day, so not a connection we count.