OS 264 then FR 45 at Vienna
Stuttgart → Vienna → Athens
Timetable, Vienna time
10:35OS 264 from Stuttgart at the gate
09:50FR 45 to Athens leaves the gate
23 h 15 apart on the timetable, overnight
FR 45 leaves 23 h 15 after OS 264 arrives on the timetable: more than half a day, so not a connection we count.