If you want a pure chat solution, I’d first try using a pure chat software, like https://element.io/, Mattermost, https://rocket.chat/ and similar ones.
We are also working on a side chat plugin, so keep an eye on that too: Introducing Discourse Chat (PRE-ALPHA).
Do you mean infringing in the legal sense? Discourse is licensed under GPL-2 so you should check with your company lawyers.