AA 5345 then AA 2255 at Charlotte
Huntsville → Charlotte → Pittsburgh
Timetable, Charlotte time
10:20AA 5345 from Huntsville at the gate
08:55AA 2255 to Pittsburgh leaves the gate
22 h 35 apart on the timetable, overnight
AA 2255 leaves 22 h 35 after AA 5345 arrives on the timetable: more than half a day, so not a connection we count.