DL 3884 then UA 4500 at Detroit
Cleveland → Detroit → Washington
Timetable, Detroit time
07:09DL 3884 from Cleveland at the gate
19:45UA 4500 to Washington leaves the gate
12 h 36 apart on the timetable
UA 4500 leaves 12 h 36 after DL 3884 arrives on the timetable: more than half a day, so not a connection we count.