AA 2437 then WN 2731 at Charlotte
Pittsburgh → Charlotte → Nashville
Timetable, Charlotte time
06:39AA 2437 from Pittsburgh at the gate
20:55WN 2731 to Nashville leaves the gate
14 h 16 apart on the timetable
WN 2731 leaves 14 h 16 after AA 2437 arrives on the timetable: more than half a day, so not a connection we count.