CA 1492 then CA 1269 at Beijing
Zunyi → Beijing → Yan'an
Timetable, Beijing time
23:55CA 1492 from Zunyi at the gate
17:00CA 1269 to Yan'an leaves the gate
17 h 05 apart on the timetable, overnight
CA 1269 leaves 17 h 05 after CA 1492 arrives on the timetable: more than half a day, so not a connection we count.