FR 59 then QR 3540 at Barcelona
Napoli → Barcelona → Nantes
Timetable, Barcelona time
12:50FR 59 from Napoli at the gate
10:15QR 3540 to Nantes leaves the gate
21 h 25 apart on the timetable, overnight
QR 3540 leaves 21 h 25 after FR 59 arrives on the timetable: more than half a day, so not a connection we count.