BR 715 then BR 18 at Taipei
Beijing → Taipei → San Francisco
Timetable, Taipei time
23:00BR 715 from Beijing at the gate
19:50BR 18 to San Francisco leaves the gate
20 h 50 apart on the timetable, overnight
BR 18 leaves 20 h 50 after BR 715 arrives on the timetable: more than half a day, so not a connection we count.