DL 3951 then AA 6190 at LAX
Phoenix Sky Harbor → Los Angeles → Las Vegas
Timetable, Los Angeles time
14:29DL 3951 from Phoenix Sky Harbor at the gate
14:22AA 6190 to Las Vegas leaves the gate
23 h 53 apart on the timetable, overnight
AA 6190 leaves 23 h 53 after DL 3951 arrives on the timetable: more than half a day, so not a connection we count.