UA 2 then CI 5345 at San Francisco
Singapore → San Francisco → Taipei
Timetable, San Francisco time
09:15UA 2 from Singapore at the gate
07:00CI 5345 to Taipei leaves the gate
21 h 45 apart on the timetable, overnight
CI 5345 leaves 21 h 45 after UA 2 arrives on the timetable: more than half a day, so not a connection we count.