FR 13 then FR 4545 at Barcelona
Vienna → Barcelona → Porto
Timetable, Barcelona time
08:20FR 13 from Vienna at the gate
06:45FR 4545 to Porto leaves the gate
22 h 25 apart on the timetable, overnight
FR 4545 leaves 22 h 25 after FR 13 arrives on the timetable: more than half a day, so not a connection we count.