BR 646 then UA 1660 at O'Hare
Anchorage → Chicago → Seattle (SEA)
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
12:45UA 1660 to Seattle (SEA) leaves the gate
19 h 35 apart on the timetable, overnight
UA 1660 leaves 19 h 35 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.