'Thought' conversations

there is a discord between spoken words, written words and thought words. What is thought is not as easily expressed in writing (because of electrical connections that keep the circuit complete?), or spoken and gotten as is thought through (because the neural channels to produce sound and receive sound are not the same as written?). How does thinking words happen? It is possible to have an entire monologue, very succinct and detailed, even visualize the letters (morases),,but how does the cojplete conversation happen? in the absence of a capturing media, the brain strings ideas together, much as a pres\requisite to sequenced sensible writing or speaking. the process is similar only incipient and faster since it is not slowed down by what it takes to write or articulate or the process that ensures a speech is gotten. in the absence of cross mechanisms the bbrain shoots away at its pace. it shoots away as long as there is a thinker that directs the thought, captured in the brains own clipboard, retained as long as the same thought is retriggered  maybe until a synapse is formed?. The same pathway can be reignited when another vein of thought is activated forming interconnections and an insight as a result happens from the crossconnection. the meme ecosystem for creativity seems to become valid perhaps with further thought or maybe it is an 'also' process.