AA 112 then QR 3655 at Barcelona
Miami → Barcelona → Nice
Timetable, Barcelona time
07:05AA 112 from Miami at the gatealso BA 1514, AY 3780, IB 4460
19:50QR 3655 to Nice leaves the gatealso LA 5778
12 h 45 apart on the timetable
QR 3655 leaves 12 h 45 after AA 112 arrives on the timetable: more than half a day, so not a connection we count.