FR 9601 then IB 1221 at Madrid
Rome → Madrid → Nantes
Timetable, Madrid time
19:50FR 9601 from Rome at the gate
15:50IB 1221 to Nantes leaves the gatealso LA 1736, AY 4785, VY 5836, QR 6955
20 h apart on the timetable, overnight
IB 1221 leaves 20 h after FR 9601 arrives on the timetable: more than half a day, so not a connection we count.