B6 8356 then DL 9969 at Boston
New York JFK → Boston → Atlanta
Timetable, Boston time
13:02B6 8356 from New York JFK at the gate
16:15DL 9969 to Atlanta leaves the gate
3 h 13 apart on the timetable
Boston’s board gives an arrival time for only about 58% of its flights, so many days show no gate time.
The last days
B6 8356 and DL 9969 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.