QR 3702 then LA 5751 at Barcelona
Berlin → Barcelona → Athens
Timetable, Barcelona time
21:00QR 3702 from Berlin at the gate
17:10LA 5751 to Athens leaves the gate
20 h 10 apart on the timetable, overnight
LA 5751 leaves 20 h 10 after QR 3702 arrives on the timetable: more than half a day, so not a connection we count.