DL 854 then DL 836 at Atlanta
Springfield → Atlanta → Phoenix
Timetable, Atlanta time
18:14DL 854 from Springfield at the gate
16:25DL 836 to Phoenix leaves the gate
22 h 11 apart on the timetable, overnight
DL 836 leaves 22 h 11 after DL 854 arrives on the timetable: more than half a day, so not a connection we count.