FR 1645 then FR 6974 at Fiumicino
Vienna → Rome → Barcelona
Timetable, Rome time
07:55FR 1645 from Vienna at the gate
20:35FR 6974 to Barcelona leaves the gate
12 h 40 apart on the timetable
FR 6974 leaves 12 h 40 after FR 1645 arrives on the timetable: more than half a day, so not a connection we count.