DL 1733 then DL 2771 at Atlanta
Detroit → Atlanta → New York JFK
Timetable, Atlanta time
18:06DL 1733 from Detroit at the gate
19:35DL 2771 to New York JFK leaves the gate
1 h 29 apart on the timetable
The last days
DL 1733 and DL 2771 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.