DL 706 then UA 343 at Atlanta
Denver → Atlanta → San Francisco
Timetable, Atlanta time
18:01DL 706 from Denver at the gate
17:35UA 343 to San Francisco leaves the gate
23 h 34 apart on the timetable, overnight
UA 343 leaves 23 h 34 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.