IB 2602 then FR 4545 at Barcelona
Buenos Aires → Barcelona → Porto
Timetable, Barcelona time
08:15IB 2602 from Buenos Aires at the gatealso LL 2602, AY 5352, QR 7230
20:40FR 4545 to Porto leaves the gate
12 h 25 apart on the timetable
FR 4545 leaves 12 h 25 after IB 2602 arrives on the timetable: more than half a day, so not a connection we count.