Exactly, there is a huge amount of value in being able to quickly get a holistic view of topics. Most topics don't exist in an isolated tool - most often there are the official discussions/designs which exist in place, there are customer interactions with the topic which uses a separate channel, and then there are one off small conversations about the topic in chats like Slack. So isolated, tool specific searches are great for finding specific documents, but less useful for getting actionable insights.
Regarding contextualizing: we're currently working on organizational understanding and we're very excited about this one! We're embedding users based on the documents they authored or interacted with, the questions they have asked, description of projects they worked on, and the org chart. The thinking is that, there will always be questions that can't fully be answered via documentation alone. But in those cases we'll be able to recommend someone who might know. It also has the benefit of contextualizing the user asking so that we can surface more relevant results for them.