DL 1885 then DL 5245 at Detroit
New York JFK → Detroit → Madison
Timetable, Detroit time
15:02DL 1885 from New York JFK at the gate
17:06DL 5245 to Madison leaves the gate
2 h 04 apart on the timetable
The last days
DL 1885 and DL 5245 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.