UA 2760 then UA 3263 at Houston
San Diego → Houston → Richmond
Timetable, Houston time
13:22UA 2760 from San Diego at the gate
07:00UA 3263 to Richmond leaves the gate
17 h 38 apart on the timetable, overnight
UA 3263 leaves 17 h 38 after UA 2760 arrives on the timetable: more than half a day, so not a connection we count.