BR 654 then UA 5566 at O'Hare
Anchorage → Chicago → Pittsburgh
Timetable, Chicago time
13:40BR 654 from Anchorage at the gate
12:48UA 5566 to Pittsburgh leaves the gate
23 h 08 apart on the timetable, overnight
UA 5566 leaves 23 h 08 after BR 654 arrives on the timetable: more than half a day, so not a connection we count.