UA 5891 then OO 6045 at O'Hare
Roanoke → Chicago → Grand Rapids
Timetable, Chicago time
11:54UA 5891 from Roanoke at the gate
11:45OO 6045 to Grand Rapids leaves the gate
23 h 51 apart on the timetable, overnight
OO 6045 leaves 23 h 51 after UA 5891 arrives on the timetable: more than half a day, so not a connection we count.