ethics in journalism

There are probably certain rules of writing an article, making a show or conducting an interview. Of course media is supported by advertising revenues and advertising is important and should not be skipped. But I am sure there are certain rules of placing an ad. When the whole episode in no longer 4 minutes there is no need to break it into two parts. There is also no need to pretend being sick and coughing. Well, maybe the reason for that is not to let some information out?
Anyway, here's example from Fox News for using commercial break in the middle of a very short interview.