@fiesty76 if you tag a person with their @membername then they will receive an email notification. Have you had the opportunity to look at the Getting Started on Connect guide? There is a link in the left column of the footer on every Connect page that provides step by step "how to" for different tasks on Connect. Here's the direct link: https://connect.mayoclinic.org/get-started-on-connect/

There's also another article that you may find helpful -- Tips for Participating in an Online Community:
-- https://connect.mayoclinic.org/page/about-connect/newsfeed-post/tips-for-participating-in-an-online-community/

The answer to your first question - ... you will both see the post??? -- we both should see your post (assuming we are following the discussion or you mentioned our @membernames. The answer to your second question - ...you add a note to someone in the walking group who doesn't follow this thread, they won't see your response to them? -- same answer, if they are following this discussion, they see the post or if you mention their @membername, they will see your note.

Hope this helps! Happy Thursday 🙂