CA 1512 then CA 1447 at Beijing
Nanchang → Beijing → Kunming
Timetable, Beijing time
18:15CA 1512 from Nanchang at the gate
17:15CA 1447 to Kunming leaves the gate
23 h apart on the timetable, overnight
CA 1447 leaves 23 h after CA 1512 arrives on the timetable: more than half a day, so not a connection we count.