WN 3246 then AA 857 at Miami
Austin → Miami → Washington National
Timetable, Miami time
16:30WN 3246 from Austin at the gate
16:26AA 857 to Washington National leaves the gate
23 h 56 apart on the timetable, overnight
AA 857 leaves 23 h 56 after WN 3246 arrives on the timetable: more than half a day, so not a connection we count.