IB 1402 then IB 683 at Madrid
Athens → Madrid → Venezia
Timetable, Madrid time
02:45IB 1402 from Athens at the gate
21:30IB 683 to Venezia leaves the gate
18 h 45 apart on the timetable
IB 683 leaves 18 h 45 after IB 1402 arrives on the timetable: more than half a day, so not a connection we count.