UA 3903 then BR 630 at San Francisco
Seoul → San Francisco → Los Angeles
Timetable, San Francisco time
08:46UA 3903 from Seoul at the gate
22:30BR 630 to Los Angeles leaves the gate
13 h 44 apart on the timetable
BR 630 leaves 13 h 44 after UA 3903 arrives on the timetable: more than half a day, so not a connection we count.