UA 3901 then AS 740 at San Francisco
Hong Kong → San Francisco → San Diego
Timetable, San Francisco time
16:34UA 3901 from Hong Kong at the gate
10:40AS 740 to San Diego leaves the gatealso QR 8792
18 h 06 apart on the timetable, overnight
AS 740 leaves 18 h 06 after UA 3901 arrives on the timetable: more than half a day, so not a connection we count.