UA 852 then UA 552 at San Francisco
Taipei → San Francisco → Redmond
Timetable, San Francisco time
19:00UA 852 from Taipei at the gate
16:40UA 552 to Redmond leaves the gate
21 h 40 apart on the timetable, overnight
UA 552 leaves 21 h 40 after UA 852 arrives on the timetable: more than half a day, so not a connection we count.