OS 252 then FR 947 at Vienna
Hamburg → Vienna → Krakow
Timetable, Vienna time
11:15OS 252 from Hamburg at the gate
08:30FR 947 to Krakow leaves the gate
21 h 15 apart on the timetable, overnight
FR 947 leaves 21 h 15 after OS 252 arrives on the timetable: more than half a day, so not a connection we count.