DL 3685 then DL 4638 at Atlanta
Fargo → Atlanta → Huntsville
Timetable, Atlanta time
10:03DL 3685 from Fargo at the gate
13:32DL 4638 to Huntsville leaves the gate
3 h 29 apart on the timetable
The last days
DL 3685 and DL 4638 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.