AA 3300 then DL 796 at O'Hare
Denver → Chicago → Atlanta
Timetable, Chicago time
11:45AA 3300 from Denver at the gate
15:00DL 796 to Atlanta leaves the gate
3 h 15 apart on the timetable
Today
From the airport’s board at 08:57 Chicago time
11:45AA 3300 due at the gate, no estimate yet
15:00DL 796 due to leave, no estimate yet
3 h 15 between the gates, on these times
The last days
AA 3300 and DL 796 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.