OS 970 then FR 1645 at Vienna
Stockholm → Vienna → Rome
Timetable, Vienna time
09:00OS 970 from Stockholm at the gate
06:10FR 1645 to Rome leaves the gate
21 h 10 apart on the timetable, overnight
FR 1645 leaves 21 h 10 after OS 970 arrives on the timetable: more than half a day, so not a connection we count.