Not what I am asking. If you are 6 or 30 feet away there is no guarantee you won't or will be infected.
What I am asking is if staying 6 feet away helps? If not then when does it start to help, 10, 20, 30, 40 feet or more?
It doesn't help. He says 60+ feet, but that's working with adequate ventilation standards, so it all depends really. For example, outdoor spaces, which are really well ventilated from an airflow point of view, may not require any distancing, since aerosols disperse extremely rapidly in open air.