I completely agree!
Anyone who 'talks to themselves' is engaged in a form of Bicameral Companionship ala Jaynes's theories.

My assumption was that 'hearing' our own inner voice in our 'mind' is just one end of the continuum of experiencing a Bicameral Companion.

Definition of a Bicameral Companion: One part of the brain sending signals to another part that is experienced as 'hearing voices'.

Which means that anyone who ...