1 - No. They only see what they see during tc. However, tribal council lasts alot longer then we see with alot more questions from Jeff. It is then edited. So, they see stuff/answers/interactions we never do.
2 - No. They are not supposed to discuss any of that stuff - but it is clear they do. Just read Kelly and Brandon's comments after they were booted. Clearly they discussed plenty - just maybe away from the ears of producers.