AA 551 then AA 1335 at Charlotte
Providence → Charlotte → Pittsburgh
Timetable, Charlotte time
02:49AA 551 from Providence at the gate
15:34AA 1335 to Pittsburgh leaves the gate
12 h 45 apart on the timetable
AA 1335 leaves 12 h 45 after AA 551 arrives on the timetable: more than half a day, so not a connection we count.