EW 752 then FR 45 at Vienna
Cologne → Vienna → Athens
Timetable, Vienna time
08:25EW 752 from Cologne at the gate
07:50FR 45 to Athens leaves the gate
23 h 25 apart on the timetable, overnight
FR 45 leaves 23 h 25 after EW 752 arrives on the timetable: more than half a day, so not a connection we count.