DL 2513 then UA 5539 at O'Hare
New York LaGuardia → Chicago → Cleveland
Timetable, Chicago time
20:45DL 2513 from New York LaGuardia at the gate
10:50UA 5539 to Cleveland leaves the gate
14 h 05 apart on the timetable, overnight
UA 5539 leaves 14 h 05 after DL 2513 arrives on the timetable: more than half a day, so not a connection we count.