AA 1815 then AA 1570 at Miami
Grand Cayman → Miami → Charleston (South Carolina)
Timetable, Miami time
10:01AA 1815 from Grand Cayman at the gate
22:06AA 1570 to Charleston (South Carolina) leaves the gate
12 h 05 apart on the timetable
AA 1570 leaves 12 h 05 after AA 1815 arrives on the timetable: more than half a day, so not a connection we count.