K4 221 then UA 2811 at O'Hare
Anchorage → Chicago → Las Vegas
Timetable, Chicago time
13:41K4 221 from Anchorage at the gate
09:00UA 2811 to Las Vegas leaves the gate
19 h 19 apart on the timetable, overnight
UA 2811 leaves 19 h 19 after K4 221 arrives on the timetable: more than half a day, so not a connection we count.