UA 1056 then UA 3263 at Houston
Cancún → Houston → Richmond
Timetable, Houston time
16:22UA 1056 from Cancún at the gate
07:00UA 3263 to Richmond leaves the gate
14 h 38 apart on the timetable, overnight
UA 3263 leaves 14 h 38 after UA 1056 arrives on the timetable: more than half a day, so not a connection we count.