CV 12 then UA 1801 at O'Hare
Anchorage → Chicago → Seattle (SEA)
Timetable, Chicago time
19:11CV 12 from Anchorage at the gate
16:15UA 1801 to Seattle (SEA) leaves the gate
21 h 04 apart on the timetable, overnight
UA 1801 leaves 21 h 04 after CV 12 arrives on the timetable: more than half a day, so not a connection we count.