FR 574 then IB 5170 at Barcelona
Bologna → Barcelona → Bilbao
Timetable, Barcelona time
20:15FR 574 from Bologna at the gate
15:35IB 5170 to Bilbao leaves the gate
19 h 20 apart on the timetable, overnight
IB 5170 leaves 19 h 20 after FR 574 arrives on the timetable: more than half a day, so not a connection we count.