CA 1492 then CA 4104 at Beijing
Zunyi → Beijing → Chengdu Shuangliu
Timetable, Beijing time
23:55CA 1492 from Zunyi at the gate
18:30CA 4104 to Chengdu Shuangliu leaves the gate
18 h 35 apart on the timetable, overnight
CA 4104 leaves 18 h 35 after CA 1492 arrives on the timetable: more than half a day, so not a connection we count.