CA 1492 then UA 889 at Beijing
Zunyi → Beijing → San Francisco
Timetable, Beijing time
23:55CA 1492 from Zunyi at the gate
19:20UA 889 to San Francisco leaves the gate
19 h 25 apart on the timetable, overnight
UA 889 leaves 19 h 25 after CA 1492 arrives on the timetable: more than half a day, so not a connection we count.