A3 707 then GQ 840 at Athens
Bilbao → Athens → Vienna
Timetable, Athens time
15:40A3 707 from Bilbao at the gate
15:35GQ 840 to Vienna leaves the gate
23 h 55 apart on the timetable, overnight
GQ 840 leaves 23 h 55 after A3 707 arrives on the timetable: more than half a day, so not a connection we count.