LL 5509 then FR 4545 at Barcelona
Bilbao → Barcelona → Porto
Timetable, Barcelona time
20:50LL 5509 from Bilbao at the gate
10:20FR 4545 to Porto leaves the gate
13 h 30 apart on the timetable, overnight
FR 4545 leaves 13 h 30 after LL 5509 arrives on the timetable: more than half a day, so not a connection we count.