DL 1284 then UA 1716 at Houston
Atlanta → Houston → Las Vegas
Timetable, Houston time
20:11DL 1284 from Atlanta at the gate
19:46UA 1716 to Las Vegas leaves the gate
23 h 35 apart on the timetable, overnight
UA 1716 leaves 23 h 35 after DL 1284 arrives on the timetable: more than half a day, so not a connection we count.