DL 1656 then DL 957 at Atlanta
Charlotte → Atlanta → Denver
Timetable, Atlanta time
12:12DL 1656 from Charlotte at the gate
11:55DL 957 to Denver leaves the gate
23 h 43 apart on the timetable, overnight
DL 957 leaves 23 h 43 after DL 1656 arrives on the timetable: more than half a day, so not a connection we count.