FR 1644 then OS 527 at Vienna
Rome → Vienna → Milan Linate
Timetable, Vienna time
21:30FR 1644 from Rome at the gate
18:30OS 527 to Milan Linate leaves the gate
21 h apart on the timetable, overnight
OS 527 leaves 21 h after FR 1644 arrives on the timetable: more than half a day, so not a connection we count.