DL 957 then UA 2004 at Denver
Atlanta → Denver → Chicago O'Hare
Timetable, Denver time
13:19DL 957 from Atlanta at the gate
15:14UA 2004 to Chicago O'Hare leaves the gate
1 h 55 apart on the timetable
Today
From the airport’s board at 19:49 Denver time
12:59DL 957 reached the gate20 min early
18:24UA 2004 left the gate3 h 10 late
5 h 25 between the gates
The last days
DL 957 and UA 2004 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.