UA 3901 then OZ 6302 at San Francisco
Hong Kong → San Francisco → Seattle
Timetable, San Francisco time
16:34UA 3901 from Hong Kong at the gate
14:10OZ 6302 to Seattle leaves the gate
21 h 36 apart on the timetable, overnight
OZ 6302 leaves 21 h 36 after UA 3901 arrives on the timetable: more than half a day, so not a connection we count.