Mike Florio and Chris Simms examine Brock Purdy’s impressive performance for the San Francisco 49ers against the Pittsburgh Steelers. #NBCSports #ProFootballTalk #BrockPurdy » Subscribe to NFL on NBC: https://www.youtube.com/NFLonNBC?sub_confirmation=1 » Watch Pro Football Talk live on Peacock weekdays 7a-9a: https://peacocktv.smart.link/v82e9dl56…