DL 542 then DL 2144 at Atlanta
Seattle → Atlanta → Madison
Timetable, Atlanta time
21:51DL 542 from Seattle at the gate
21:45DL 2144 to Madison leaves the gate
23 h 54 apart on the timetable, overnight
DL 2144 leaves 23 h 54 after DL 542 arrives on the timetable: more than half a day, so not a connection we count.