CA 1492 then CA 1447 at Beijing
Zunyi → Beijing → Kunming
Timetable, Beijing time
23:55CA 1492 from Zunyi at the gate
17:15CA 1447 to Kunming leaves the gate
17 h 20 apart on the timetable, overnight
CA 1447 leaves 17 h 20 after CA 1492 arrives on the timetable: more than half a day, so not a connection we count.