I'm currently looking at this flight:
Bilbao, Spain to Brussels, then from Brussels to Chicago, IL, where I will again connect to my final destination of Seattle.
The flight from Spain is via Brussels Airlines, and the other two on United, all on the same ticket. I'd have a 2 hr 20 min layover in Brussels. Is this adequate time to make the transfer? Will I have to go through any security/border control or customs screenings, or would I do these in Spain or the United States?