Re: Eh?
"a LinkedIn newsfeed that serves up articles based on the project you are working on"
So basically they are going to open up all your [private and confidential] Office365 content, scan it for interesting keywords and phrases, and serve up adverts based on this. May be they have been doing this already?
"Office suggesting an expert to connect with via LinkedIn to help with a task you're trying to complete"
Sounds like cyber espionage to me: company A is working on secret project X, gets a notification that company or person B is also working on a similar project. That's the sort of leak that would normally get you in court under the terms of your employment contract or NDA.