I don't have any employee like that who talks too but I've worked with a coworker who's like this. It's like a constant mosquito in your ears because they never shut up. I had to anonymously report her (yes, it's a lady, they never seem to keep quiet) before she reduced it. It was impossible for her to stop it completely.
Personally, I would do the same thing that you did because I won't have to suffer that kind of person for hours everyday. How they are able to work without making serious mistakes is something that I can't understand because when I talk, I can't focus on my work until I stop.