I can definitely not explain that to you, and that's your definition.
In my company, I call the person responsible for fully transmitting the company's message a representative. A spokesperson, in my case, is someone to whom instructions are given so that the information is transmitted. It doesn't mean that person supports all of the company's positions, because that's not their mandate.
It can be interpreted in many ways. I'm neither a representative nor a director. They have what are called field officers.