HT 3819 then CZ 3135 at Guangzhou
Beijing Capital → Guangzhou → Tianjin
Timetable, Guangzhou time
00:35HT 3819 from Beijing Capital at the gate
16:20CZ 3135 to Tianjin leaves the gate
15 h 45 apart on the timetable
CZ 3135 leaves 15 h 45 after HT 3819 arrives on the timetable: more than half a day, so not a connection we count.