DL 8844 then AA 6255 at O'Hare
Washington → Chicago → Sioux Falls
Timetable, Chicago time
10:44DL 8844 from Washington at the gate
12:56AA 6255 to Sioux Falls leaves the gate
2 h 12 apart on the timetable
The last days
DL 8844 and AA 6255 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.