DL 2377 then UA 5539 at O'Hare
Salt Lake City → Chicago → Cleveland
Timetable, Chicago time
18:05DL 2377 from Salt Lake City at the gate
10:50UA 5539 to Cleveland leaves the gate
16 h 45 apart on the timetable, overnight
UA 5539 leaves 16 h 45 after DL 2377 arrives on the timetable: more than half a day, so not a connection we count.