Body language is an important part of everyday communications and relationships. It is important to people in business management, leadership and day to day interactions. Nonverbal communication is also important to relationships outside the workplace in such interactions as dating and parenting.
The television industry is well aware of need to study nonverbal communications. One drama teacher has a website you might be interested in. It’s http://www.cherylkingproductions.com/#/classes/4535278767. Another is 102: Insiders Guide to Getting on Television
This communication skill includes listening because while nonverbal signals are exchanged. These are accompanied by spoken words as well.