UA 2180 then OO 6080 at O'Hare
Pittsburgh → Chicago → Saginaw
Timetable, Chicago time
14:55UA 2180 from Pittsburgh at the gate
13:25OO 6080 to Saginaw leaves the gate
22 h 30 apart on the timetable, overnight
OO 6080 leaves 22 h 30 after UA 2180 arrives on the timetable: more than half a day, so not a connection we count.