I remembered something - this is general info - if I was speaking to my OH usually something to do with the children, school, something informative, my husband would be looking at me but I could see, the blinds were down, he was blanking me off without saying anything - dumb insolence - this went on for years until he had to go to a school parents open night, gcse options, I had a migraine, couldn’t go and he asked me where the school was. I kid you not.
He came back after an hour said he had been driving around and couldn’t find it, accused me of deliberately giving him incorrect directions. I’d had enough by then
Another thing he used to do which I found disconcerting was, as above, me telling him something important, possibly which school his children attended, he would throw back his head, open his mouth until there was a clunk, yawn in an exaggerated way for a while, then snap back and ask, ‘what did you say/were you going on about/asking me - at which point I would say, never mind. So that worked.
Apparently, major yawns close the Eustachian tubes, so he genuinely couldn’t hear.
He would do this regularly, or walk out of the room while I was speaking to him, or
cut right across and give a child an instruction, or speak to the dog? disrespectful.
Respect is the bottom line.
Anyway this isn’t about ME this is persuading the OP that she has a right to an expectation of communication which is so obviously not being met.
Taciturn is difficult enough, but a persistent lack of interest and fobbing off,
this is not acceptable.