Access between concourses at PDX
I am contemplating an itinerary with a 3hr45 layover at PDX (SLC-PDX-SEA) where I would have access to the Escape Lounge in Concourse D.
From a little research it appears AS flies from Concourses B & C. How easy is it to move between the concourses airside?
Also I assume there is no lounge access with AS domestic F?