FR 270 then IB 5170 at Barcelona
Milan → Barcelona → Bilbao
Timetable, Barcelona time
17:10FR 270 from Milan at the gate
15:35IB 5170 to Bilbao leaves the gate
22 h 25 apart on the timetable, overnight
IB 5170 leaves 22 h 25 after FR 270 arrives on the timetable: more than half a day, so not a connection we count.