BR 646 then UA 2769 at O'Hare
Anchorage → Chicago → Denver
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
15:56UA 2769 to Denver leaves the gate
22 h 46 apart on the timetable, overnight
UA 2769 leaves 22 h 46 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.