AA 3115 then TN 1339 at San Francisco
Chicago O'Hare → San Francisco → Los Angeles
Timetable, San Francisco time
11:29AA 3115 from Chicago O'Hare at the gatealso QF 4922
14:05TN 1339 to Los Angeles leaves the gatealso BA 1786, QF 3023, AY 4100, IB 4737, AA 6429, GF 6573
2 h 36 apart on the timetable
The last days
AA 3115 and TN 1339 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.