My opinion:
If your thinking, your perception, your sensory experience and the resulting actions cannot be connected in any way with the experience and observation of others, then something is wrong.
Of course, very few of us will always be able to understand or experience the thoughts and feelings of others 100%, but at least we meet at the point where our perceptions, experiences and worlds of thought intersect.
And even if everyone at a group meeting can have a different experience and processing of the same evening, it is at least certain that this group meeting took place THERE with this and that person, where there was a common toast.

5 people will look outside the same window, reckognizing different things, but they still see the same area.