"Direct Esoteric Communication DEC" refers to communication at and between vibrational energy levels which ones brain cannot perceive, i.e., Esoteric levels: The MIND realm and the Spiritual realm. From the concept that Man consists of three simultaneously existing vibrational energy dimensions: The Spiritual dimension; The MIND dimension; And the physical dimension.
An example of "Direct Esoteric Communication DEC" is the subtle communication between a mother and her child. This communication involves the faculty of intuition, which is part of ones Spiritual dimension. Another example is the subtle and healing communication between a competent psychotherapist and his/her client/patient that utilizes what I refer to as "Empathetic Understanding" (one of several "virtues" the human being can obtain via completing Karma over many lifetimes).