CV 12 then UA 4535 at O'Hare
Anchorage → Chicago → Pittsburgh
Timetable, Chicago time
19:11CV 12 from Anchorage at the gate
12:48UA 4535 to Pittsburgh leaves the gate
17 h 37 apart on the timetable, overnight
UA 4535 leaves 17 h 37 after CV 12 arrives on the timetable: more than half a day, so not a connection we count.