AA 3747 then AA 1962 at Charlotte
Columbia Regional → Charlotte → Pittsburgh
Timetable, Charlotte time
10:24AA 3747 from Columbia Regional at the gate
22:25AA 1962 to Pittsburgh leaves the gate
12 h 01 apart on the timetable
AA 1962 leaves 12 h 01 after AA 3747 arrives on the timetable: more than half a day, so not a connection we count.