AA 2778 then AA 5543 at Charlotte
Grand Rapids → Charlotte → Pittsburgh
Timetable, Charlotte time
14:59AA 2778 from Grand Rapids at the gate
08:35AA 5543 to Pittsburgh leaves the gate
17 h 36 apart on the timetable, overnight
AA 5543 leaves 17 h 36 after AA 2778 arrives on the timetable: more than half a day, so not a connection we count.