AA 1102 then AA 487 at Miami
Cancún → Miami → Nashville
Timetable, Miami time
13:37AA 1102 from Cancún at the gate
14:30AA 487 to Nashville leaves the gate
53 min apart on the timetable
The last days
AA 1102 and AA 487 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.