UA 2600 then AA 3176 at LAX
Houston → Los Angeles → San Francisco
Timetable, Los Angeles time
09:00UA 2600 from Houston at the gate
22:04AA 3176 to San Francisco leaves the gate
13 h 04 apart on the timetable
AA 3176 leaves 13 h 04 after UA 2600 arrives on the timetable: more than half a day, so not a connection we count.