DL 2709 then UA 2764 at Houston
Atlanta → Houston → San Francisco
Timetable, Houston time
13:23DL 2709 from Atlanta at the gate
12:40UA 2764 to San Francisco leaves the gate
23 h 17 apart on the timetable, overnight
UA 2764 leaves 23 h 17 after DL 2709 arrives on the timetable: more than half a day, so not a connection we count.