DL 3840 then DL 1630 at Atlanta
Aspen → Atlanta → Savannah
Timetable, Atlanta time
12:55DL 3840 from Aspen at the gate
17:09DL 1630 to Savannah leaves the gate
4 h 14 apart on the timetable
The last days
DL 3840 and DL 1630 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.