WN 3402 then DL 681 at Atlanta
St Louis → Atlanta → San Francisco
Timetable, Atlanta time
19:20WN 3402 from St Louis at the gate
19:19DL 681 to San Francisco leaves the gate
23 h 59 apart on the timetable, overnight
DL 681 leaves 23 h 59 after WN 3402 arrives on the timetable: more than half a day, so not a connection we count.