I have embedded the video below. The talk about Amazon starts around the 14:10 mark, and it's well worth your time to watch. Moonves reveals that he is far more ambivalent to Amazon than most people in publishing industry, including people who work for S&S.
The video doesn't support my speculation that Amazon is in talks to buy S&S, but it does suggest that Moonves is open to the idea of working more closely with Amazon by - well, let's just leave that sentence unfinished. I'm done with my speculating on this topic, so I'm not going to finish that thought.