WN 4999 then AA 4444 at Boston
Nashville → Boston → New York JFK
Timetable, Boston time
13:50WN 4999 from Nashville at the gate
17:30AA 4444 to New York JFK leaves the gate
3 h 40 apart on the timetable
The last days
WN 4999 and AA 4444 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.