AA 1992 then WN 2731 at Charlotte
St Louis → Charlotte → Nashville
Timetable, Charlotte time
08:00AA 1992 from St Louis at the gate
20:55WN 2731 to Nashville leaves the gate
12 h 55 apart on the timetable
WN 2731 leaves 12 h 55 after AA 1992 arrives on the timetable: more than half a day, so not a connection we count.