DL 5255 then UA 1848 at Atlanta
Valdosta → Atlanta → San Francisco
Timetable, Atlanta time
07:17DL 5255 from Valdosta at the gate
19:18UA 1848 to San Francisco leaves the gate
12 h 01 apart on the timetable
UA 1848 leaves 12 h 01 after DL 5255 arrives on the timetable: more than half a day, so not a connection we count.