DL 9941 then DL 4137 at Atlanta
Queretaro → Atlanta → Shreveport
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
15:40DL 4137 to Shreveport leaves the gate
19 h 57 apart on the timetable, overnight
DL 4137 leaves 19 h 57 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.