FR 574 then LA 5752 at Barcelona
Bologna → Barcelona → Bilbao
Timetable, Barcelona time
16:30FR 574 from Bologna at the gate
12:35LA 5752 to Bilbao leaves the gate
20 h 05 apart on the timetable, overnight
LA 5752 leaves 20 h 05 after FR 574 arrives on the timetable: more than half a day, so not a connection we count.