AA 3247 then DL 1297 at Boston
Miami (MIA) → Boston → Austin
Timetable, Boston time
13:23AA 3247 from Miami (MIA) at the gate
13:15DL 1297 to Austin leaves the gate
23 h 52 apart on the timetable, overnight
DL 1297 leaves 23 h 52 after AA 3247 arrives on the timetable: more than half a day, so not a connection we count.