AA 487 then AA 2156 at Miami
Nashville → Miami → Atlanta
Timetable, Miami time
20:06AA 487 from Nashville at the gate
20:43AA 2156 to Atlanta leaves the gate
37 min apart on the timetable
The last days
AA 487 and AA 2156 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.