San Francisco 49ers shut down electrical substation injury theory | Pro Football Talk | NFL on NBC

Mike Florio and Chris Simms react to John Lynch dismissing the electrical substation theory surrounding Levi's Stadium and the 49ers' practice facility after conducting an independent study. #NBCSports #NFL #ProFootballTalk » Watch SNF on Peacock: https://peacocktv.smart.link/v82e9dl56 » Subscribe to NFL on NBC: https://www.youtube.com/NFLonNBC?sub_confirmation=1 » Get more NFL news on NBC Sports: https://www.nbcspor...