AC 507 then UA 6080 at O'Hare
Toronto Pearson → Chicago → Saginaw
Timetable, Chicago time
15:38AC 507 from Toronto Pearson at the gate
13:25UA 6080 to Saginaw leaves the gate
21 h 47 apart on the timetable, overnight
UA 6080 leaves 21 h 47 after AC 507 arrives on the timetable: more than half a day, so not a connection we count.