UA 297 then OO 6080 at O'Hare
Baltimore → Chicago → Saginaw
Timetable, Chicago time
13:54UA 297 from Baltimore at the gate
13:25OO 6080 to Saginaw leaves the gate
23 h 31 apart on the timetable, overnight
OO 6080 leaves 23 h 31 after UA 297 arrives on the timetable: more than half a day, so not a connection we count.