AA 790 then AA 2255 at Charlotte
Phoenix → Charlotte → Pittsburgh
Timetable, Charlotte time
12:03AA 790 from Phoenix at the gate
08:55AA 2255 to Pittsburgh leaves the gate
20 h 52 apart on the timetable, overnight
AA 2255 leaves 20 h 52 after AA 790 arrives on the timetable: more than half a day, so not a connection we count.