AA 2437 then AA 6051 at Charlotte
Pittsburgh → Charlotte → Harrisburg
Timetable, Charlotte time
06:39AA 2437 from Pittsburgh at the gate
19:02AA 6051 to Harrisburg leaves the gate
12 h 23 apart on the timetable
AA 6051 leaves 12 h 23 after AA 2437 arrives on the timetable: more than half a day, so not a connection we count.