CV 251 then UA 1049 at O'Hare
Anchorage → Chicago → Las Vegas
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
07:20UA 1049 to Las Vegas leaves the gate
12 h 20 apart on the timetable, overnight
UA 1049 leaves 12 h 20 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.