UA 2 then QR 8796 at San Francisco
Singapore → San Francisco → Los Angeles
Timetable, San Francisco time
09:15UA 2 from Singapore at the gate
22:06QR 8796 to Los Angeles leaves the gate
12 h 51 apart on the timetable
QR 8796 leaves 12 h 51 after UA 2 arrives on the timetable: more than half a day, so not a connection we count.