CZ 3224 then CA 1829 at Guangzhou
Yan'an → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
00:05CZ 3224 from Yan'an at the gate
16:20CA 1829 to Shanghai Hongqiao leaves the gate
16 h 15 apart on the timetable
CA 1829 leaves 16 h 15 after CZ 3224 arrives on the timetable: more than half a day, so not a connection we count.