EC 1703 then IB 337 at Madrid
Nice → Madrid → Miami
Timetable, Madrid time
20:40EC 1703 from Nice at the gate
16:25IB 337 to Miami leaves the gatealso AY 5641, EI 5863, QR 6853, BA 7259, PC 7717, AA 8645
19 h 45 apart on the timetable, overnight
IB 337 leaves 19 h 45 after EC 1703 arrives on the timetable: more than half a day, so not a connection we count.