AA 1509 then AA 2230 at Miami
Cleveland → Miami → Houston
Timetable, Miami time
09:02AA 1509 from Cleveland at the gate
21:59AA 2230 to Houston leaves the gate
12 h 57 apart on the timetable
AA 2230 leaves 12 h 57 after AA 1509 arrives on the timetable: more than half a day, so not a connection we count.