AA 5423 then AA 2255 at Charlotte
Greenville-Spartanburg → Charlotte → Pittsburgh
Timetable, Charlotte time
10:56AA 5423 from Greenville-Spartanburg at the gate
08:55AA 2255 to Pittsburgh leaves the gate
21 h 59 apart on the timetable, overnight
AA 2255 leaves 21 h 59 after AA 5423 arrives on the timetable: more than half a day, so not a connection we count.