UA 992 then EC 9682 at Barcelona
Washington → Barcelona → Lisbon
Timetable, Barcelona time
09:00UA 992 from Washington at the gatealso AC 3802, LH 7946
15:00EC 9682 to Lisbon leaves the gate
6 h apart on the timetable
The last days
UA 992 and EC 9682 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.