CA 1602 then CA 1511 at Beijing
Shenyang → Beijing → Nanchang
Timetable, Beijing time
10:40CA 1602 from Shenyang at the gate
10:10CA 1511 to Nanchang leaves the gate
23 h 30 apart on the timetable, overnight
CA 1511 leaves 23 h 30 after CA 1602 arrives on the timetable: more than half a day, so not a connection we count.