AA 1673 then DL 766 at Detroit
Phoenix → Detroit → Las Vegas
Timetable, Detroit time
16:55AA 1673 from Phoenix at the gate
16:48DL 766 to Las Vegas leaves the gate
23 h 53 apart on the timetable, overnight
DL 766 leaves 23 h 53 after AA 1673 arrives on the timetable: more than half a day, so not a connection we count.