If you mean the "Comments" area underneath the viz inside Tableau Server, then "no". It is a general purpose collaboration area which isn't tied directly to the data being displayed in the dashboard itself.
If I've misunderstood you, please let me know?
Hi Sk Safi,
Note: Query String Webpart might not work as it will send only one value to another webpart. Later once the comments are available you can now update your data source with a lookup and publish again. Hope this helps.