Think of it like a phone.
Are you really hearing the other person?
Yes - and no - you’re hearing their voice, translated into electronic impulses (mic) then into data, then into a signal, then back into data, electronics, and finally, sound waves.
Things can go wrong along that chain, crackling noises, signal loss, but they are still communicating.
Same in my experience with this, the spirit is trying to contact you, but they need to send the thoughts to you, and your own brain may slightly glitch between that and interpreting them.
The one thing I do know is the more you do it, the more accurate you’ll get, and the clearer you will hear them.
Don’t try to censor what you receive in the moment, get it written down, then deploy your critical faciulites afterwards.
Analytical overlay (“I can’t believe they mean that? It must have meant something else”) is a killer, but, so is asusming everything you hear is sold gold and acting on it without reviewing it first.
That’s a point I believe E.A. makes and it’s really important to bear in mind.