DL 1247 then DL 2332 at Atlanta
Chicago O'Hare → Atlanta → Omaha
Timetable, Atlanta time
09:55DL 1247 from Chicago O'Hare at the gate
12:55DL 2332 to Omaha leaves the gate
3 h apart on the timetable
The last days
DL 1247 and DL 2332 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.