AA 1869 then DL 1797 at Miami
Houston → Miami → New York LaGuardia
Timetable, Miami time
20:35AA 1869 from Houston at the gate
19:50DL 1797 to New York LaGuardia leaves the gate
23 h 15 apart on the timetable, overnight
DL 1797 leaves 23 h 15 after AA 1869 arrives on the timetable: more than half a day, so not a connection we count.