FR 50 then FR 9857 at Vienna
Treviso → Vienna → Helsinki
Timetable, Vienna time
23:00FR 50 from Treviso at the gate
15:20FR 9857 to Helsinki leaves the gate
16 h 20 apart on the timetable, overnight
FR 9857 leaves 16 h 20 after FR 50 arrives on the timetable: more than half a day, so not a connection we count.