AA 2230 then B6 1632 at Houston
Miami → Houston → Boston
Timetable, Houston time
23:58AA 2230 from Miami at the gate
19:05B6 1632 to Boston leaves the gate
19 h 07 apart on the timetable, overnight
B6 1632 leaves 19 h 07 after AA 2230 arrives on the timetable: more than half a day, so not a connection we count.