BR 646 then UA 4765 at O'Hare
Anchorage → Chicago → Des Moines
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
12:55UA 4765 to Des Moines leaves the gate
19 h 45 apart on the timetable, overnight
UA 4765 leaves 19 h 45 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.