I assume though you have to belong to a cable/Dish provider to be able to stream the games.
I don’t know the answer to your question, it looks like a mixed bag:
http://www.geekwire.com/2014/seahawks-live-stream-cbs-nbc-free/
I can say authoritatively that all NFL game streams are readily available via pirate sites in Europe.
#FBIagent@door