AA 2437 then AA 5292 at Charlotte
Pittsburgh → Charlotte → Knoxville
Timetable, Charlotte time
06:39AA 2437 from Pittsburgh at the gate
22:45AA 5292 to Knoxville leaves the gate
16 h 06 apart on the timetable
AA 5292 leaves 16 h 06 after AA 2437 arrives on the timetable: more than half a day, so not a connection we count.