DL 514 then AA 609 at Phoenix
Boston → Phoenix → Miami
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
13:37AA 609 to Miami leaves the gate
15 h 44 apart on the timetable, overnight
AA 609 leaves 15 h 44 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.