CA 1492 then CA 4144 at Beijing
Zunyi → Beijing → Chongqing
Timetable, Beijing time
23:55CA 1492 from Zunyi at the gate
19:45CA 4144 to Chongqing leaves the gate
19 h 50 apart on the timetable, overnight
CA 4144 leaves 19 h 50 after CA 1492 arrives on the timetable: more than half a day, so not a connection we count.