CZ 6835 then CA 1829 at Guangzhou
Kashgar → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
16:25CZ 6835 from Kashgar at the gate
16:20CA 1829 to Shanghai Hongqiao leaves the gate
23 h 55 apart on the timetable, overnight
CA 1829 leaves 23 h 55 after CZ 6835 arrives on the timetable: more than half a day, so not a connection we count.