UA 772 then AA 3176 at LAX
Beijing → Los Angeles → San Francisco
Timetable, Los Angeles time
07:55UA 772 from Beijing at the gate
22:04AA 3176 to San Francisco leaves the gate
14 h 09 apart on the timetable
AA 3176 leaves 14 h 09 after UA 772 arrives on the timetable: more than half a day, so not a connection we count.