DL 5078 then DL 5126 at Detroit
Fort Wayne → Detroit → Grand Rapids
Timetable, Detroit time
15:10DL 5078 from Fort Wayne at the gate
18:00DL 5126 to Grand Rapids leaves the gate
2 h 50 apart on the timetable
The last days
DL 5078 and DL 5126 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.