BR 646 then UA 1620 at O'Hare
Anchorage → Chicago → Miami
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
10:43UA 1620 to Miami leaves the gate
17 h 33 apart on the timetable, overnight
UA 1620 leaves 17 h 33 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.