FR 4596 then FR 7351 at Barcelona
Porto → Barcelona → Vienna
Timetable, Barcelona time
00:50FR 4596 from Porto at the gate
13:10FR 7351 to Vienna leaves the gate
12 h 20 apart on the timetable
FR 7351 leaves 12 h 20 after FR 4596 arrives on the timetable: more than half a day, so not a connection we count.