IB 2319 then IB 435 at Madrid
Castellón → Madrid → Bilbao
Timetable, Madrid time
19:20IB 2319 from Castellón at the gate
15:50IB 435 to Bilbao leaves the gatealso LA 1567, VY 5007, AT 5343, AV 6050, QR 6914, BA 7138, AA 8800
20 h 30 apart on the timetable, overnight
IB 435 leaves 20 h 30 after IB 2319 arrives on the timetable: more than half a day, so not a connection we count.