CZ 8210 then CZ 3545 at Guangzhou
Bazhong → Guangzhou → Shanghai Hongqiao
Timetable, Guangzhou time
23:40CZ 8210 from Bazhong at the gate
17:00CZ 3545 to Shanghai Hongqiao leaves the gate
17 h 20 apart on the timetable, overnight
CZ 3545 leaves 17 h 20 after CZ 8210 arrives on the timetable: more than half a day, so not a connection we count.