A3 355 then FR 44 at Athens
Santorini → Athens → Vienna
Timetable, Athens time
13:00A3 355 from Santorini at the gate
08:00FR 44 to Vienna leaves the gate
19 h apart on the timetable, overnight
FR 44 leaves 19 h after A3 355 arrives on the timetable: more than half a day, so not a connection we count.