AS 634 then UA 871 at San Francisco
Las Vegas → San Francisco → Taipei
Timetable, San Francisco time
17:41AS 634 from Las Vegas at the gatealso QF 3697, FJ 5841, AA 7412, CX 7935, QR 8861
13:35UA 871 to Taipei leaves the gate
19 h 54 apart on the timetable, overnight
UA 871 leaves 19 h 54 after AS 634 arrives on the timetable: more than half a day, so not a connection we count.