LL 5023 then LA 5756 at Barcelona
Athens → Barcelona → Basel
Timetable, Barcelona time
14:05LL 5023 from Athens at the gate
11:35LA 5756 to Basel leaves the gate
21 h 30 apart on the timetable, overnight
LA 5756 leaves 21 h 30 after LL 5023 arrives on the timetable: more than half a day, so not a connection we count.