DL 257 then AA 353 at Boston
Amsterdam → Boston → Miami
Timetable, Boston time
14:13DL 257 from Amsterdam at the gate
14:00AA 353 to Miami leaves the gate
23 h 47 apart on the timetable, overnight
AA 353 leaves 23 h 47 after DL 257 arrives on the timetable: more than half a day, so not a connection we count.