FR 3181 then LL 5480 at Barcelona
Rome → Barcelona → Nantes
Timetable, Barcelona time
15:05FR 3181 from Rome at the gate
10:45LL 5480 to Nantes leaves the gate
19 h 40 apart on the timetable, overnight
LL 5480 leaves 19 h 40 after FR 3181 arrives on the timetable: more than half a day, so not a connection we count.