You can communicate without leading but you can't lead without communicating.

All effective communication is the result of creating relationship. Whether you are speaking to an audience of one or one thousand, your goal is to think from their point of view. It is important to realize that, when you are speaking, your job is more than delivering data. It is to constantly investigate your audience to see if they are receiving your message. When you are aware of the person (or persons) to whom you are speaking, you will see if your words have been effective and your meaning has been clear. This is the basis for a true connection.