Can a belief cord direct the subconscious to the episodic memory of its origin, or does a belief cord also contain the basic information of a watershed event giving rise to the belief?

Here again, it is the latter explanation, as the upper levels of the mind cannot reach the deep subconscious or the akashic records directly. So if there is an opportunity to connect with a belief cord, there will also be a kind of factual description attached, describing the context of its formation. The same variables and complications will also make it unlikely for the belief cords to be understood and utilized as a path to healing, at least a first step in making a connection to the problem. But the potential is there for enough understanding to appreciate that the negative beliefs the cords represent are a kind of wounding and likely a distortion of thinking based on tragic circumstances and not a reasoned high-level conclusion reached by being in divine alignment and aware of a higher truth about what might have happened. That loftier state of being must be achieved through healing the negativity of the negative beliefs with a positive replacement and that will indeed solve the problem, at lease the portion represented by the cording in question.