CV 78 then UA 2160 at O'Hare
Dallas-Fort Worth → Chicago → Washington National
Timetable, Chicago time
20:02CV 78 from Dallas-Fort Worth at the gate
19:45UA 2160 to Washington National leaves the gate
23 h 43 apart on the timetable, overnight
UA 2160 leaves 23 h 43 after CV 78 arrives on the timetable: more than half a day, so not a connection we count.