FR 270 then LA 5745 at Barcelona
Milan → Barcelona → Bilbao
Timetable, Barcelona time
17:55FR 270 from Milan at the gate
12:35LA 5745 to Bilbao leaves the gate
18 h 40 apart on the timetable, overnight
LA 5745 leaves 18 h 40 after FR 270 arrives on the timetable: more than half a day, so not a connection we count.