AA 1799 then AA 4612 at Miami
Austin → Miami → Oklahoma City
Timetable, Miami time
08:40AA 1799 from Austin at the gate
20:59AA 4612 to Oklahoma City leaves the gate
12 h 19 apart on the timetable
AA 4612 leaves 12 h 19 after AA 1799 arrives on the timetable: more than half a day, so not a connection we count.