AA 1801 then AA 3226 at Miami
Newark → Miami → Nashville
Timetable, Miami time
15:27AA 1801 from Newark at the gate
16:10AA 3226 to Nashville leaves the gate
43 min apart on the timetable
The last days
AA 1801 and AA 3226 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.