DL 1639 then DL 1334 at Detroit
Charlotte → Detroit → Nashville
Timetable, Detroit time
11:30DL 1639 from Charlotte at the gate
20:50DL 1334 to Nashville leaves the gate
9 h 20 apart on the timetable
The last days
DL 1639 and DL 1334 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.