DL 5499 then DL 5773 at Detroit
Richmond → Detroit → Grand Rapids
Timetable, Detroit time
15:05DL 5499 from Richmond at the gate
15:49DL 5773 to Grand Rapids leaves the gate
44 min apart on the timetable
The last days
DL 5499 and DL 5773 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.