FR 6301 then LA 5783 at Barcelona
Sofia → Barcelona → Nantes
Timetable, Barcelona time
23:15FR 6301 from Sofia at the gate
19:55LA 5783 to Nantes leaves the gate
20 h 40 apart on the timetable, overnight
LA 5783 leaves 20 h 40 after FR 6301 arrives on the timetable: more than half a day, so not a connection we count.