DL 8838 then UA 571 at Atlanta
Memphis → Atlanta → San Francisco
Timetable, Atlanta time
07:28DL 8838 from Memphis at the gate
07:00UA 571 to San Francisco leaves the gate
23 h 32 apart on the timetable, overnight
UA 571 leaves 23 h 32 after DL 8838 arrives on the timetable: more than half a day, so not a connection we count.