Conveniently Coherent Thoughts: Subverted; the reason you can get some coherent thoughts and images through the techlepathy part of the Psychic Powers is because they require you to produce specifically focused thoughts and images in order to engage the transmitter, in a similar way to a voice-activated microphone.
If they just transmitted your regular thoughts as they happened, the telepathic bands would be filled with not merely a rambling narrative thread of consciousness, but pure neural hash from the thousands of different threads in your mind all talking at once.