EW 7520 then LA 5744 at Barcelona
Hamburg → Barcelona → Nantes
Timetable, Barcelona time
18:45EW 7520 from Hamburg at the gate
13:40LA 5744 to Nantes leaves the gate
18 h 55 apart on the timetable, overnight
LA 5744 leaves 18 h 55 after EW 7520 arrives on the timetable: more than half a day, so not a connection we count.