With regard the OP.
Just as we know from visual clues when someone is no longer paying attention, so we can often tell from purely audio clues.
Especially when the audio is the only thing we have to go on.
When conversing on the phone there is a natural pattern to the conversation that the brain picks up on.
Subconsciously.
And when that pattern gets broken, such as a very slightly longer pause than expected, then we pick up on it.
This is not telepathy.
This is just the brain focusing on patterns and reacting to when the pattern breaks.
It may not even be pauses but the tone of the person's response.
Or slight hesitations etc.
Anytime there is visual or audio connection between two parties, trying to argue for telepathy rather than just subconsciously picking up on non-telepathic signals, becomes rather difficult, IMO.
I certainly see nothing of telepathy in the example in the OP.
thanks for posting and indicating that you grasp the issue presented in the OP.
You are quite correct and I agree that in most rapid or normal banter type discussion this is the case, audio clues are very handy and indeed informative.
However it is the longer spanning explanations etc, the ones that take more than a few words to express that have to be silently listened to be understood etc that are the primary concern of the OP.
To exemplify the issue I ask the following questions. [ they re not directed at you and are directed at no one in particular]
How many times have you realized half way through a long sentence that the "silent" listener on the other end of the telephone line has tuned out, causing you to change what you were going to say in an attempt to maintain interest?
How many times have you baited a person you are talking to when realizing they have tuned out with totally irrelevant information?
for example:
Me: "Hey mom, I couldn't come over for lunch because I had to go down to the store and buy those books I wanted *** and elephants that are pink can't fly but blue ones can..."
Mom: "Yes dear, and by the way how's your father?"
This sort of fiasco happens all the time in sometimes very subtle forms. The (***) indicating the moment of realization [with no visual or auditory clues available]
Also this is very common when dealing with broadly classified "Dementia" patients and especially during the very early stages where the ability to hold "effective telephone conversations" deteriorates significantly as the need for visual and auditory clues becomes more and more essential for function. ["To talk with mom or dad you have to do it face to face, the telephone is hopeless" sort of situation] If I can I will dig up the research to support the above...and post it here if necessary.
To me this is what I refer to as "evidence of the negative outcomes of
psychic-social disconnection" which leads to significant isolation with it's inherent loneliness, as the person ability to "listen to the listener" drops off.
In other words what I am suggesting is:
The ability for "older" persons who may be suffering from various degrees of "Dementia" to use a telephone for effective communication, reduces significantly due their reduced capacity to "listen to the listener" [which is a key symptom of Dementia]
Possibly the best way to test for dementia is to carry out a medical interview using a telephone as the medium [ between two isolated interview rooms] and assess the ability to communicate in this manner and the emotional outcomes as well. [As anger and intolerance as a way of covering up and coping with the failure are very common]