DL 1079 then DL 916 at Detroit
Norfolk → Detroit → Las Vegas
Timetable, Detroit time
07:53DL 1079 from Norfolk at the gate
20:05DL 916 to Las Vegas leaves the gate
12 h 12 apart on the timetable
DL 916 leaves 12 h 12 after DL 1079 arrives on the timetable: more than half a day, so not a connection we count.