BT 877 then VY 1176 at Barcelona
Tallinn → Barcelona → Porto
Timetable, Barcelona time
10:30BT 877 from Tallinn at the gate
12:15VY 1176 to Porto leaves the gatealso QR 3701, IB 5090, LL 5090
1 h 45 apart on the timetable
The last days
BT 877 and VY 1176 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.