QR 3663 then FR 4597 at Barcelona
Bologna → Barcelona → Porto
Timetable, Barcelona time
10:05QR 3663 from Bologna at the gatealso IB 5387, LL 5387, LA 5855, VY 6111
06:45FR 4597 to Porto leaves the gate
20 h 40 apart on the timetable, overnight
FR 4597 leaves 20 h 40 after QR 3663 arrives on the timetable: more than half a day, so not a connection we count.