CV 251 then AA 2748 at O'Hare
Anchorage → Chicago → Las Vegas
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
11:00AA 2748 to Las Vegas leaves the gate
16 h apart on the timetable, overnight
AA 2748 leaves 16 h after CV 251 arrives on the timetable: more than half a day, so not a connection we count.