AA 1721 then DL 3156 at Charlotte
Myrtle Beach → Charlotte → Atlanta (ATL)
Timetable, Charlotte time
08:07AA 1721 from Myrtle Beach at the gate
08:00DL 3156 to Atlanta (ATL) leaves the gate
23 h 53 apart on the timetable, overnight
DL 3156 leaves 23 h 53 after AA 1721 arrives on the timetable: more than half a day, so not a connection we count.