FR 215 then FR 51 at Vienna
Milan → Vienna → Treviso
Timetable, Vienna time
22:50FR 215 from Milan at the gate
20:05FR 51 to Treviso leaves the gate
21 h 15 apart on the timetable, overnight
FR 51 leaves 21 h 15 after FR 215 arrives on the timetable: more than half a day, so not a connection we count.