DL 2930 then UA 2190 at Houston
New York LaGuardia → Houston → Las Vegas
Timetable, Houston time
17:24DL 2930 from New York LaGuardia at the gate
17:00UA 2190 to Las Vegas leaves the gate
23 h 36 apart on the timetable, overnight
UA 2190 leaves 23 h 36 after DL 2930 arrives on the timetable: more than half a day, so not a connection we count.