Dr Chris Hart talks on 2GB about the benefits of the O2Vent 21 July 2016 Dr Chris Hart talks on 2GB about the benefits of the 02Vent on the Chris Moore Show. Listen to this great interview from 5 July 2016. Leave a Reply Click here to cancel reply. Name (required) Email (will not be published) (required) Website Comment XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> Notify me of follow-up comments by email. Notify me of new posts by email.