AA 4693 then AA 4618 at JFK
Nashville → New York → Boston
Timetable, New York time
14:46AA 4693 from Nashville at the gate
15:34AA 4618 to Boston leaves the gate
48 min apart on the timetable
The last days
AA 4693 and AA 4618 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.