DL 88 then DL 2253 at LAX
Hong Kong → Los Angeles → Las Vegas
Timetable, Los Angeles time
07:54DL 88 from Hong Kong at the gate
07:35DL 2253 to Las Vegas leaves the gate
23 h 41 apart on the timetable, overnight
DL 2253 leaves 23 h 41 after DL 88 arrives on the timetable: more than half a day, so not a connection we count.