CV 251 then UA 751 at O'Hare
Anchorage → Chicago → Portland (Oregon)
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
09:05UA 751 to Portland (Oregon) leaves the gate
14 h 05 apart on the timetable, overnight
UA 751 leaves 14 h 05 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.