CZ 3264 then HO 1870 at Guangzhou
Dazhou → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
23:15CZ 3264 from Dazhou at the gate
18:30HO 1870 to Shanghai Hongqiao leaves the gate
19 h 15 apart on the timetable, overnight
HO 1870 leaves 19 h 15 after CZ 3264 arrives on the timetable: more than half a day, so not a connection we count.