UA 6047 then AA 6322 at O'Hare
Pittsburgh → Chicago → Grand Rapids
Timetable, Chicago time
20:31UA 6047 from Pittsburgh at the gate
18:30AA 6322 to Grand Rapids leaves the gate
21 h 59 apart on the timetable, overnight
AA 6322 leaves 21 h 59 after UA 6047 arrives on the timetable: more than half a day, so not a connection we count.