DL 5731 then AA 1184 at Boston
Pittsburgh → Boston → Miami
Timetable, Boston time
18:44DL 5731 from Pittsburgh at the gate
17:15AA 1184 to Miami leaves the gate
22 h 31 apart on the timetable, overnight
AA 1184 leaves 22 h 31 after DL 5731 arrives on the timetable: more than half a day, so not a connection we count.