AA 5020 then AA 5543 at Charlotte
Toronto → Charlotte → Pittsburgh
Timetable, Charlotte time
14:01AA 5020 from Toronto at the gate
08:35AA 5543 to Pittsburgh leaves the gate
18 h 34 apart on the timetable, overnight
AA 5543 leaves 18 h 34 after AA 5020 arrives on the timetable: more than half a day, so not a connection we count.