FR 45 then A3 366 at Athens
Vienna → Athens → Santorini
Timetable, Athens time
15:10FR 45 from Vienna at the gate
13:55A3 366 to Santorini leaves the gate
22 h 45 apart on the timetable, overnight
A3 366 leaves 22 h 45 after FR 45 arrives on the timetable: more than half a day, so not a connection we count.