CZ 3264 then CZ 3439 at Guangzhou
Dazhou → Guangzhou → Chongqing
Timetable, Guangzhou time
23:15CZ 3264 from Dazhou at the gate
20:05CZ 3439 to Chongqing leaves the gate
20 h 50 apart on the timetable, overnight
CZ 3439 leaves 20 h 50 after CZ 3264 arrives on the timetable: more than half a day, so not a connection we count.