BR 646 then UA 5987 at O'Hare
Anchorage → Chicago → Kansas City
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
12:40UA 5987 to Kansas City leaves the gate
19 h 30 apart on the timetable, overnight
UA 5987 leaves 19 h 30 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.