UA 1506 then VA 8079 at San Francisco
Miami → San Francisco → Houston
Timetable, San Francisco time
12:43UA 1506 from Miami at the gatealso AZ 4406, EK 6034
12:00VA 8079 to Houston leaves the gatealso NZ 9195
23 h 17 apart on the timetable, overnight
VA 8079 leaves 23 h 17 after UA 1506 arrives on the timetable: more than half a day, so not a connection we count.