SN 3721 then AA 69 at Madrid
Brussels → Madrid → Miami
Timetable, Madrid time
11:45SN 3721 from Brussels at the gate
10:00AA 69 to Miami leaves the gatealso BA 1559, AY 3757, IB 4611
22 h 15 apart on the timetable, overnight
AA 69 leaves 22 h 15 after SN 3721 arrives on the timetable: more than half a day, so not a connection we count.