AA 4492 then AS 1479 at O'Hare
Louisville → Chicago → San Diego
Timetable, Chicago time
11:00AA 4492 from Louisville at the gate
19:57AS 1479 to San Diego leaves the gate
8 h 57 apart on the timetable
The last days
AA 4492 and AS 1479 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.