FR 9673 then IB 1221 at Madrid
Rome → Madrid → Nantes
Timetable, Madrid time
17:05FR 9673 from Rome at the gate
15:50IB 1221 to Nantes leaves the gatealso LA 1736, AY 4785, VY 5836, QR 6955
22 h 45 apart on the timetable, overnight
IB 1221 leaves 22 h 45 after FR 9673 arrives on the timetable: more than half a day, so not a connection we count.