I tested this with another person, just using the say command without addressing each other.
For example, say Hello. will yield a message of:
But for the other person, they'll see this:
Original:[ Chrono says: Hello.] Generated:In the bustling city of Chronosville, where time was currency, people...
I've truncated the generated message just to not clutter this post.
I'm not sure if this is intended behavior or not, but I believe that the generated message should be shown to both people, because otherwise it will make following the story impossible.