Answer:
Well doing a potcast is more private, you cant talk on your own way, and is more informal and you can give your opinion, in another hand a docmentary is more searching mor deep, is formal, and you cant say your opinion about it.
Disaventages about potcast: As I said is more informal so most of the people would not like it
Disaventages about documentary: Usually is boring coause it has a lot of information
Step-by-step explanation: