CZ 5834 then CZ 3349 at Guangzhou
Altay → Guangzhou → Tianjin
Timetable, Guangzhou time
23:35CZ 5834 from Altay at the gate
19:55CZ 3349 to Tianjin leaves the gate
20 h 20 apart on the timetable, overnight
CZ 3349 leaves 20 h 20 after CZ 5834 arrives on the timetable: more than half a day, so not a connection we count.