AA 2253 then QF 3772 at San Francisco
Chicago O'Hare → San Francisco → Los Angeles
Timetable, San Francisco time
16:22AA 2253 from Chicago O'Hare at the gatealso QF 4756
16:46QF 3772 to Los Angeles leaves the gate
24 min apart on the timetable
The last days
AA 2253 and QF 3772 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.