AA 3521 then AA 5543 at Charlotte
Valparaiso → Charlotte → Pittsburgh
Timetable, Charlotte time
15:37AA 3521 from Valparaiso at the gate
08:35AA 5543 to Pittsburgh leaves the gate
16 h 58 apart on the timetable, overnight
AA 5543 leaves 16 h 58 after AA 3521 arrives on the timetable: more than half a day, so not a connection we count.