CX 80 then UA 1801 at O'Hare
Anchorage → Chicago → Seattle (SEA)
Timetable, Chicago time
19:15CX 80 from Anchorage at the gate
16:15UA 1801 to Seattle (SEA) leaves the gate
21 h apart on the timetable, overnight
UA 1801 leaves 21 h after CX 80 arrives on the timetable: more than half a day, so not a connection we count.