DL 2804 then UA 392 at O'Hare
Boston → Chicago → Cedar Rapids
Timetable, Chicago time
21:51DL 2804 from Boston at the gate
21:40UA 392 to Cedar Rapids leaves the gate
23 h 49 apart on the timetable, overnight
UA 392 leaves 23 h 49 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.