UA 643 then CI 5175 at San Francisco
Las Vegas → San Francisco → Taipei
Timetable, San Francisco time
07:44UA 643 from Las Vegas at the gatealso AC 5211, NH 7315, VA 8122, NZ 9237
21:20CI 5175 to Taipei leaves the gate
13 h 36 apart on the timetable
CI 5175 leaves 13 h 36 after UA 643 arrives on the timetable: more than half a day, so not a connection we count.