EC 1703 then IB 307 at Madrid
Nice → Madrid → Mexico City
Timetable, Madrid time
20:40EC 1703 from Nice at the gate
13:25IB 307 to Mexico City leaves the gatealso CX 1778, BA 4275, QR 5068, AY 5552, EI 5875, LY 9233
16 h 45 apart on the timetable, overnight
IB 307 leaves 16 h 45 after EC 1703 arrives on the timetable: more than half a day, so not a connection we count.