DL 823 then UA 1835 at San Francisco
Atlanta → San Francisco → Denver
Timetable, San Francisco time
17:16DL 823 from Atlanta at the gatealso AF 2495, AM 3256, LA 6318
16:24UA 1835 to Denver leaves the gatealso AC 4868, EK 6360, VA 8340, NZ 9061
23 h 08 apart on the timetable, overnight
UA 1835 leaves 23 h 08 after DL 823 arrives on the timetable: more than half a day, so not a connection we count.