FR 752 then FR 6914 at Vienna
Porto → Vienna → Milan
Timetable, Vienna time
19:20FR 752 from Porto at the gate
18:10FR 6914 to Milan leaves the gate
22 h 50 apart on the timetable, overnight
FR 6914 leaves 22 h 50 after FR 752 arrives on the timetable: more than half a day, so not a connection we count.