CZ 8254 then CA 1829 at Guangzhou
Wanxian → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
01:10CZ 8254 from Wanxian at the gate
16:20CA 1829 to Shanghai Hongqiao leaves the gate
15 h 10 apart on the timetable
CA 1829 leaves 15 h 10 after CZ 8254 arrives on the timetable: more than half a day, so not a connection we count.