Language works when we think the same, connecting the words to the same meanings and such. But that never actually happens 100%. It might be closer to 80%. (or if it’s a strange subject, 15%)
So this “conversation” that we’re having here is, to some degree, not actually happening.
But we pretend that it is.
So how much are we pretending? How much of the conversation is hallucinatory conversation?
Depends on how you define hallucination
Misremembering details, false assumptions about what is said, assuming intentionality incorrectly, projection of emotions onto others, bias, etc mean that the same words are said but we walk away with potentially wildly different interpretations of the experience
“Getting on the same page” is a challenge
And that in turn leads to diversion from the topic (and meaning).