DL 9936 then DL 4928 at Atlanta
ILN → Atlanta → Huntsville
Timetable, Atlanta time
15:29DL 9936 from ILN at the gate
16:09DL 4928 to Huntsville leaves the gate
40 min apart on the timetable
The last days
DL 9936 and DL 4928 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.