UA 3634 then AA 5317 at Charlotte
Washington → Charlotte → Nashville
Timetable, Charlotte time
10:42UA 3634 from Washington at the gate
13:15AA 5317 to Nashville leaves the gate
2 h 33 apart on the timetable
The last days
UA 3634 and AA 5317 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.