DL 763 then UA 505 at LAX
Atlanta → Los Angeles → Las Vegas
Timetable, Los Angeles time
19:55DL 763 from Atlanta at the gate
13:42UA 505 to Las Vegas leaves the gate
17 h 47 apart on the timetable, overnight
UA 505 leaves 17 h 47 after DL 763 arrives on the timetable: more than half a day, so not a connection we count.