UA 1524 then UA 3263 at Houston
Washington → Houston → Richmond
Timetable, Houston time
11:10UA 1524 from Washington at the gate
07:00UA 3263 to Richmond leaves the gate
19 h 50 apart on the timetable, overnight
UA 3263 leaves 19 h 50 after UA 1524 arrives on the timetable: more than half a day, so not a connection we count.