FR 44 then OS 259 at Vienna
Athens → Vienna → Hamburg
Timetable, Vienna time
07:25FR 44 from Athens at the gate
20:20OS 259 to Hamburg leaves the gate
12 h 55 apart on the timetable
OS 259 leaves 12 h 55 after FR 44 arrives on the timetable: more than half a day, so not a connection we count.