A special chat room should be created
Although it may make a little extra effort, we routinely direct people who are asking discussion questions into The Whiteboard. I don't think that these people need to see a chat bot, especially if it's the most recent messages. In addition, it could interrupt communication between people. And if other bots are added to do other things or other functionality is added to this bot, it could increase the message count. Putting them into a nice, separate environment would allow the people who are interested in their content to find it, but not overwhelm people who don't want to deal with it (either at the moment or ever).