FR 270 then LA 5756 at Barcelona
Milan → Barcelona → Basel
Timetable, Barcelona time
17:10FR 270 from Milan at the gate
11:35LA 5756 to Basel leaves the gate
18 h 25 apart on the timetable, overnight
LA 5756 leaves 18 h 25 after FR 270 arrives on the timetable: more than half a day, so not a connection we count.