As exhausting as it would be for you to not understand his speech, I imagine it would be exhausting to him to have to think about his words to get through. Basic incompatibility seems more likely that evil intent to lord it over you, though clearly I don't know your story.
I went through the stress and exhaustion of trying to find ways to explain things on a disagreeable level in college.
In speech and essay writing, even though it was understandable to the professor, i had to completely reorder my sentence structure. More than 2 commas, or if it needed a semicolon, sentence was too long.
"People's attention span is shorter now. Learn to think differently. They don't want to think."
It forced a start to thinking in a foreign pattern.
Looking back college was when my vocabulary and ability to concisely deliver ideas began to suffer as a result of writing in a way which appealed/catered to the new and modern way of thinking.
It wasn't about learning as much as conforming to new norms.
As a result I now find myself writing and rewriting from flipping back and forth between foreign pattern and myself.
What's crazy about the educational system when I was in school.
I got compliments by older teachers in eng/lit for conciseness of writing all throughout 1-12, but crap from mathematics.
Mathematics in 1-12th was all about do it there way or it's wrong: Conformity to authority.
College was the opposite. Write their way or get bad grades. Conformity of thought.
Mathematics do it any way you want as long as the answer is right.
Why i hate the educational system.