UA 2153 then DL 756 at O'Hare
Richmond → Chicago → Los Angeles
Timetable, Chicago time
07:42UA 2153 from Richmond at the gate
14:32DL 756 to Los Angeles leaves the gate
6 h 50 apart on the timetable
Today
From the airport’s board at 21:23 Chicago time
07:12UA 2153 reached the gate30 min early
15:59DL 756 left the gate1 h 27 late
8 h 47 between the gates
The last days
UA 2153 and DL 756 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.