LA 6139 then CI 5345 at San Francisco
Boston → San Francisco → Taipei
Timetable, San Francisco time
23:58LA 6139 from Boston at the gate
16:40CI 5345 to Taipei leaves the gate
16 h 42 apart on the timetable, overnight
CI 5345 leaves 16 h 42 after LA 6139 arrives on the timetable: more than half a day, so not a connection we count.