DL 3187 then UA 571 at Atlanta
Wilmington (ILM) → Atlanta → San Francisco
Timetable, Atlanta time
07:55DL 3187 from Wilmington (ILM) at the gate
07:00UA 571 to San Francisco leaves the gate
23 h 05 apart on the timetable, overnight
UA 571 leaves 23 h 05 after DL 3187 arrives on the timetable: more than half a day, so not a connection we count.