CA 1011 then UA 1525 at O'Hare
Anchorage → Chicago → Las Vegas
Timetable, Chicago time
17:12CA 1011 from Anchorage at the gate
15:06UA 1525 to Las Vegas leaves the gate
21 h 54 apart on the timetable, overnight
UA 1525 leaves 21 h 54 after CA 1011 arrives on the timetable: more than half a day, so not a connection we count.