UA 1272 then CI 5345 at San Francisco
Mexico City → San Francisco → Taipei
Timetable, San Francisco time
21:02UA 1272 from Mexico City at the gatealso AC 3480, NZ 9820
16:40CI 5345 to Taipei leaves the gate
19 h 38 apart on the timetable, overnight
CI 5345 leaves 19 h 38 after UA 1272 arrives on the timetable: more than half a day, so not a connection we count.