CA 3103 then AA 1564 at O'Hare
Anchorage → Chicago → Las Vegas
Timetable, Chicago time
15:13CA 3103 from Anchorage at the gate
10:35AA 1564 to Las Vegas leaves the gate
19 h 22 apart on the timetable, overnight
AA 1564 leaves 19 h 22 after CA 3103 arrives on the timetable: more than half a day, so not a connection we count.