EC 1703 then IB 417 at Madrid
Nice → Madrid → Barcelona
Timetable, Madrid time
20:40EC 1703 from Nice at the gate
15:50IB 417 to Barcelona leaves the gatealso LA 1683, LL 3017, OB 5004, VY 5058, AV 6076, QR 6894, BA 7135, AA 8824
19 h 10 apart on the timetable, overnight
IB 417 leaves 19 h 10 after EC 1703 arrives on the timetable: more than half a day, so not a connection we count.