IB 5453 then IB 5480 at Barcelona
Paris Charles de Gaulle → Barcelona → Nantes
Timetable, Barcelona time
11:45IB 5453 from Paris Charles de Gaulle at the gatealso LL 5453, VY 8061
10:45IB 5480 to Nantes leaves the gatealso VY 8140
23 h apart on the timetable, overnight
IB 5480 leaves 23 h after IB 5453 arrives on the timetable: more than half a day, so not a connection we count.