AA 1678 then AA 3244 at Charlotte
Phoenix → Charlotte → Myrtle Beach
Timetable, Charlotte time
17:17AA 1678 from Phoenix at the gate
15:25AA 3244 to Myrtle Beach leaves the gate
22 h 08 apart on the timetable, overnight
AA 3244 leaves 22 h 08 after AA 1678 arrives on the timetable: more than half a day, so not a connection we count.