AA 6064 then AA 5543 at Charlotte
Harrisburg → Charlotte → Pittsburgh
Timetable, Charlotte time
13:45AA 6064 from Harrisburg at the gate
08:35AA 5543 to Pittsburgh leaves the gate
18 h 50 apart on the timetable, overnight
AA 5543 leaves 18 h 50 after AA 6064 arrives on the timetable: more than half a day, so not a connection we count.