FR 3073 then FR 2402 at Barcelona
Prague → Barcelona → Seville
Timetable, Barcelona time
11:15FR 3073 from Prague at the gate
17:55FR 2402 to Seville leaves the gate
6 h 40 apart on the timetable
The last days
FR 3073 and FR 2402 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.