TK 9588 then UA 871 at San Francisco
Portland (Oregon) → San Francisco → Taipei
Timetable, San Francisco time
15:15TK 9588 from Portland (Oregon) at the gate
13:35UA 871 to Taipei leaves the gate
22 h 20 apart on the timetable, overnight
UA 871 leaves 22 h 20 after TK 9588 arrives on the timetable: more than half a day, so not a connection we count.