The problem with this route is that it would generate another FT thread from another passenger:

I booked the non-stop IAD-SFO flight for me and my wife only because there were two exit row seats together. Otherwise, we would have gladly made a connection. I checked online today, and for some unknown reason, our seat assignments have been moved to two middle seats in the back, and our original seats are gone! All other options that day, including connecting flights, are now sold out. How does this happen??!!