DL 1256 then DL 1430 at Detroit
Kansas City → Detroit → New York LaGuardia
Timetable, Detroit time
09:30DL 1256 from Kansas City at the gate
12:15DL 1430 to New York LaGuardia leaves the gate
2 h 45 apart on the timetable
The last days
DL 1256 and DL 1430 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.