EC 1703 then IB 1053 at Madrid
Nice → Madrid → Pamplona
Timetable, Madrid time
20:40EC 1703 from Nice at the gate
16:10IB 1053 to Pamplona leaves the gatealso LA 1742, AT 5392, VY 5568, AY 5577, AV 6058, BA 7211, AA 8723
19 h 30 apart on the timetable, overnight
IB 1053 leaves 19 h 30 after EC 1703 arrives on the timetable: more than half a day, so not a connection we count.