CA 1590 then CA 1511 at Beijing
Shanghai Hongqiao → Beijing → Nanchang
Timetable, Beijing time
11:10CA 1590 from Shanghai Hongqiao at the gate
10:10CA 1511 to Nanchang leaves the gate
23 h apart on the timetable, overnight
CA 1511 leaves 23 h after CA 1590 arrives on the timetable: more than half a day, so not a connection we count.