@ErnstWolthaus@MicrosoftTeams lately I have used "ms teams chat" to connect people from multiple departments to discuss an multi disciplinarian issue, shared an OneNote in the process and full chat history with new participants.... worked like a charm.
Thanks to @NikCharlebois for an enlightening session about SharePoint (reversed)DSC, Azure and DevOps CICD integration.
I think more SP admins should know about this.
Check out Nik's profile, blog and PS script "SharePointDSC.Reverse"