AA 504 then AA 797 at Charlotte
Boston → Charlotte → Nashville
Timetable, Charlotte time
13:54AA 504 from Boston at the gate
21:54AA 797 to Nashville leaves the gate
8 h apart on the timetable
The last days
AA 504 and AA 797 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.