UA 4584 then QF 7552 at O'Hare
Moline → Chicago → Los Angeles
Timetable, Chicago time
16:00UA 4584 from Moline at the gate
18:50QF 7552 to Los Angeles leaves the gate
2 h 50 apart on the timetable
The last days
UA 4584 and QF 7552 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.