BT 877 then QR 3689 at Barcelona
Tallinn → Barcelona → Torino
Timetable, Barcelona time
10:30BT 877 from Tallinn at the gate
16:45QR 3689 to Torino leaves the gate
6 h 15 apart on the timetable
The last days
BT 877 and QR 3689 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.