OS 553 then FR 9673 at Fiumicino
Vienna → Rome → Madrid
Timetable, Rome time
14:15OS 553 from Vienna at the gate
12:35FR 9673 to Madrid leaves the gate
22 h 20 apart on the timetable, overnight
FR 9673 leaves 22 h 20 after OS 553 arrives on the timetable: more than half a day, so not a connection we count.