K4 551 then UA 2091 at O'Hare
Anchorage → Chicago → Raleigh-Durham
Timetable, Chicago time
16:28K4 551 from Anchorage at the gate
14:30UA 2091 to Raleigh-Durham leaves the gate
22 h 02 apart on the timetable, overnight
UA 2091 leaves 22 h 02 after K4 551 arrives on the timetable: more than half a day, so not a connection we count.