UA 450 then OO 6045 at O'Hare
Toronto Pearson → Chicago → Grand Rapids
Timetable, Chicago time
11:57UA 450 from Toronto Pearson at the gate
11:45OO 6045 to Grand Rapids leaves the gate
23 h 48 apart on the timetable, overnight
OO 6045 leaves 23 h 48 after UA 450 arrives on the timetable: more than half a day, so not a connection we count.