To adapt an illustration by Greg Thomson, someone who knows no Chinese or related language could carefully listen to Chinese broadcasts on the radio for ten hours a day every day for ten years and still not be able to speak or understand any Chinese at all. All of that Chinese exposure would only be unproductive noise for him.
Meaningful language is learnable language.
And used together, they are even more powerful. For example, perhaps your tutor would tell you how to make a cup of tea. Ideally you have learned your first 1,000 words and thus already know the words for teapot, teabag, sugar, spoon, water, stove, match, light, etc. Now you ask your tutor to tell you the steps involved in making a cup of tea, while you of course record it. You should be able to follow what your tutor says because you already know the main vocabulary, but most likely there will be some words you won't understand the first time.