DL 5232 then UA 3436 at Detroit
Memphis → Detroit → Washington
Timetable, Detroit time
20:50DL 5232 from Memphis at the gate
10:13UA 3436 to Washington leaves the gate
13 h 23 apart on the timetable, overnight
UA 3436 leaves 13 h 23 after DL 5232 arrives on the timetable: more than half a day, so not a connection we count.