DL 9951 then DL 3159 at Atlanta
Queretaro → Atlanta → Nashville
Timetable, Atlanta time
20:38DL 9951 from Queretaro at the gate
13:17DL 3159 to Nashville leaves the gate
16 h 39 apart on the timetable, overnight
DL 3159 leaves 16 h 39 after DL 9951 arrives on the timetable: more than half a day, so not a connection we count.