FR 270 then IB 2629 at Barcelona
Milan → Barcelona → Miami
Timetable, Barcelona time
17:10FR 270 from Milan at the gate
15:05IB 2629 to Miami leaves the gatealso LL 2629, AY 5399, QR 8000, AA 8791
21 h 55 apart on the timetable, overnight
IB 2629 leaves 21 h 55 after FR 270 arrives on the timetable: more than half a day, so not a connection we count.