OS 553 then EW 9885 at Fiumicino
Vienna → Rome → Düsseldorf
Timetable, Rome time
14:15OS 553 from Vienna at the gate
10:30EW 9885 to Düsseldorf leaves the gate
20 h 15 apart on the timetable, overnight
EW 9885 leaves 20 h 15 after OS 553 arrives on the timetable: more than half a day, so not a connection we count.