The first well known example of long running agents taking to each other was shilling a goatse based crytpo:

> Truth Terminal had become obsessed with the Goatse meme after being put inside the Claude Backrooms server with two Claude 3 chatbots that imagined a Goatse religion, inspiring Truth Terminal to spread Goatse memes. After an X user shared their newly created GOAT coin, Truth Terminal promoted it and pumped the coin going into 2024.

https://knowyourmeme.com/memes/sites/truth-terminal

You should expect similar results.