UA 576 then UA 3907 at O'Hare
Minneapolis → Chicago → Cleveland
Timetable, Chicago time
13:15UA 576 from Minneapolis at the gate
07:30UA 3907 to Cleveland leaves the gate
18 h 15 apart on the timetable, overnight
UA 3907 leaves 18 h 15 after UA 576 arrives on the timetable: more than half a day, so not a connection we count.