IB 2319 then IB 1213 at Madrid
Castellón → Madrid → Nice
Timetable, Madrid time
19:20IB 2319 from Castellón at the gate
16:15IB 1213 to Nice leaves the gatealso LA 1726, VY 5532, QR 6937, AA 8780
20 h 55 apart on the timetable, overnight
IB 1213 leaves 20 h 55 after IB 2319 arrives on the timetable: more than half a day, so not a connection we count.