Play video content TMZSports.com There’s only one man breathing who has been in an Octagon with Kamaru Usman and Khamzat Chimaev — Gilbert Burns — and now “Durinho” is breaking down the highly anticipated UFC 294 co-main event! 37-year-old Burns joined Babcock on the “TMZ Sports” TV show (airs nightly on FS1) … and having