CZ 3264 then CZ 3349 at Guangzhou
Dazhou → Guangzhou → Tianjin
Timetable, Guangzhou time
23:15CZ 3264 from Dazhou at the gate
20:00CZ 3349 to Tianjin leaves the gate
20 h 45 apart on the timetable, overnight
CZ 3349 leaves 20 h 45 after CZ 3264 arrives on the timetable: more than half a day, so not a connection we count.