UA 1535 then LF 7657 at Dulles
Raleigh-Durham → Washington → Cleveland
Timetable, Washington time
11:50UA 1535 from Raleigh-Durham at the gate
09:00LF 7657 to Cleveland leaves the gate
21 h 10 apart on the timetable, overnight
LF 7657 leaves 21 h 10 after UA 1535 arrives on the timetable: more than half a day, so not a connection we count.