W4 6723 then LX 1839 at Athens
Venezia → Athens → Zurich
Timetable, Athens time
22:20W4 6723 from Venezia at the gate
18:00LX 1839 to Zurich leaves the gate
19 h 40 apart on the timetable, overnight
LX 1839 leaves 19 h 40 after W4 6723 arrives on the timetable: more than half a day, so not a connection we count.