AA 712 then AA 2750 at Charlotte
St Louis → Charlotte → Nashville
Timetable, Charlotte time
10:13AA 712 from St Louis at the gate
14:55AA 2750 to Nashville leaves the gate
4 h 42 apart on the timetable
The last days
AA 712 and AA 2750 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.