FR 50 then FR 5912 at Vienna
Treviso → Vienna → Napoli
Timetable, Vienna time
23:00FR 50 from Treviso at the gate
18:55FR 5912 to Napoli leaves the gate
19 h 55 apart on the timetable, overnight
FR 5912 leaves 19 h 55 after FR 50 arrives on the timetable: more than half a day, so not a connection we count.