AA 3176 then UA 2390 at San Francisco
Los Angeles → San Francisco → Austin
Timetable, San Francisco time
14:13AA 3176 from Los Angeles at the gatealso QF 4743
17:20UA 2390 to Austin leaves the gatealso AC 3276
3 h 07 apart on the timetable
The last days
AA 3176 and UA 2390 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.