VZ 3719 then SG 74 at Bangkok
Beijing Daxing → Bangkok → Kolkata
Timetable, Bangkok time
05:20VZ 3719 from Beijing Daxing at the gate
05:00SG 74 to Kolkata leaves the gate
23 h 40 apart on the timetable, overnight
SG 74 leaves 23 h 40 after VZ 3719 arrives on the timetable: more than half a day, so not a connection we count.