A3 671 then A3 712 at Athens
Venezia → Athens → Barcelona
Timetable, Athens time
18:20A3 671 from Venezia at the gate
16:40A3 712 to Barcelona leaves the gate
22 h 20 apart on the timetable, overnight
A3 712 leaves 22 h 20 after A3 671 arrives on the timetable: more than half a day, so not a connection we count.