DL 471 then DL 2956 at Atlanta
Los Angeles → Atlanta → Philadelphia
Timetable, Atlanta time
00:34DL 471 from Los Angeles at the gate
12:38DL 2956 to Philadelphia leaves the gate
12 h 04 apart on the timetable
DL 2956 leaves 12 h 04 after DL 471 arrives on the timetable: more than half a day, so not a connection we count.