DL 110 then DL 1769 at Atlanta
Buenos Aires → Atlanta → Chattanooga
Timetable, Atlanta time
05:55DL 110 from Buenos Aires at the gate
17:46DL 1769 to Chattanooga leaves the gate
11 h 51 apart on the timetable
The last days
DL 110 and DL 1769 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.