Each Write encrypts a separate "record" (in the parlance of TLS and Noise). Each of those records can be arbitrarily dropped, replayed, or reflected. Here's an

Each Write encrypts a separate "record" (in the parlance of TLS and Noise). Each of those records can be arbitrarily dropped, replayed, or reflected. Here's an example, if you do Write("Hello") Write(" the password is ") Write("password") then without a key I can make you or your peer read "Hello the password is Hello" (or "HelloHelloHello" or any composition of those messages). No Noise protocol would allow that.