IB 423 then FR 4545 at Barcelona
Madrid → Barcelona → Porto
Timetable, Barcelona time
20:25IB 423 from Madrid at the gatealso IB 423S, LA 1684, LL 3023, OB 5010, VY 5063, AV 6072, QR 6918
17:15FR 4545 to Porto leaves the gate
20 h 50 apart on the timetable, overnight
FR 4545 leaves 20 h 50 after IB 423 arrives on the timetable: more than half a day, so not a connection we count.