BR 608 then UA 1803 at O'Hare
Anchorage → Chicago → Las Vegas
Timetable, Chicago time
20:40BR 608 from Anchorage at the gate
10:30UA 1803 to Las Vegas leaves the gate
13 h 50 apart on the timetable, overnight
UA 1803 leaves 13 h 50 after BR 608 arrives on the timetable: more than half a day, so not a connection we count.