UA 3402 then UA 5539 at O'Hare
Detroit → Chicago → Cleveland
Timetable, Chicago time
16:50UA 3402 from Detroit at the gate
10:50UA 5539 to Cleveland leaves the gate
18 h apart on the timetable, overnight
UA 5539 leaves 18 h after UA 3402 arrives on the timetable: more than half a day, so not a connection we count.