VU 305 then LX 181 at Bangkok
Hanoi → Bangkok → Zurich
Timetable, Bangkok time
14:10VU 305 from Hanoi at the gate
13:15LX 181 to Zurich leaves the gate
23 h 05 apart on the timetable, overnight
LX 181 leaves 23 h 05 after VU 305 arrives on the timetable: more than half a day, so not a connection we count.