DL 2109 then UA 129 at Houston
New York LaGuardia → Houston → Rio De Janeiro
Timetable, Houston time
21:36DL 2109 from New York LaGuardia at the gate
20:15UA 129 to Rio De Janeiro leaves the gate
22 h 39 apart on the timetable, overnight
UA 129 leaves 22 h 39 after DL 2109 arrives on the timetable: more than half a day, so not a connection we count.