This idea of a wall or front might have more to do with unconscious pick-up on societal habits. In other words if you follow the typology line of thinking and apply a concept of Fe then it's often seen as unpopular to voice an expression of emotion, or rather a negative one that might disrupt the ease of another's mind with your own emotional baggage.
But that's just one facet or theory on my part. Maybe there is a lingering unease about confronting your own issues, paying particular attention to the fact that most people appear (to me at least) to be very unhappy with their situations but, through a perverse sunken cost fallacy, unable to justify a change of direction to produce a better outcome for themselves. This can then be projected onto those who openly talk about their own issues and causes the projector to clam up even more out of resistance.
There is a video of Alan Watts that sums up this fairly succinctly:
But to continue, as a person who is affected or afflicted (depending on your view) by neurotic impulses, I recognise quite keenly the neuroticisms in others. For me the issue is that I very much enjoyed the moment to moment of my existence, engaging with hobbies and friends & becoming lost in engaging games and ideas. However I always seem to be surrounded by those who resented that I (at the time at least) didn't appear to be striving for the future in a rigid and specific manner focused on financial success and security. Some were doing this out of their sense of caring as in they didn't want to see me destitute or over-relying on my family.
I think that's fair enough, but there are those who are not so concerned with this angle as they are that their inner conflicts are colouring their outer relations; to the point that they place their fears onto others in order to test their resolve so they themselves can feel relieved, temporarily, of their own stresses.
And I would argue this 'wall' is built out of these stresses and an unwillingness to confront them due to their potential emotional disturbance; ignorance is incredibly useful in our ability to be productive, but not always useful for ease of mind.
The lack of connection, then, is not because of a lack of intellectual or engaging content, but a lack of a genuine presentation of that content. This means there is a trapping, where we get stuck in the hall of mirrors and can only feed back into more of what we know about what we already know.
What you believe shows and it drives everything you do as a human being, even if your beliefs are paradoxically in the realm of logic and reason, the extreme heights of which tend to expose their limitations.
I'm not sure, on the whole, if we are ready to attempt an escape of this hall of mirrors. But maybe it's about water dripping on a stone in some cave, rather than a burst dam.