UA 448 then UA 3900 at San Francisco
Vancouver → San Francisco → Hong Kong
Timetable, San Francisco time
15:27UA 448 from Vancouver at the gatealso CM 1125, AC 3283, AC 3449, NZ 9878
07:00UA 3900 to Hong Kong leaves the gate
15 h 33 apart on the timetable, overnight
UA 3900 leaves 15 h 33 after UA 448 arrives on the timetable: more than half a day, so not a connection we count.