I had not even thought of that! I did accidentally after a 10 hour day - slip for for half a second and said "what!?!?" it was less than a second and I was half way through leaving - it was after working hours, it was a big, complex question and interrupted my flow brashly, I didnt even realise I had said it in the wrong tone and that other poeple may have heard it. I immediately did my best to answer the question, but that slight slip up must have made him feel embarrased and under threat. I remember it now. To be fair it was after work, the wrong moment and really an interruption, when a calm "can we discuss this at one point" was expected in that env.
A lot of people in management also have imposter syndrome which makes anyone under them that appears competent seem like a danger to them.
While doing a contract and consulting I've ran into this, but nothing like my wife in her career.
First corporate job as webdev/design, had her boss get fired for embezzlement of about quarter of a mil. Bosses after that kinda sucked so she left.
Second job (marketing manager/design) was fine for a while, until her great boss left and they replaced her with a sketchy character. I listened in on a number of her meetings and we came to the conclusion that he wanted to bring in a contracting group that was going to give him kickbacks. This guy seemed highly threatened by her. She found another job and within 6 months that guy was fired and the people that still worked there didn't know the exact details but there were hush hush whispers of fraud.
Third job (sr marketing manager) was fine with the first boss over her. But as always, that person found an even better paying position and left. Next director had an issue with taking other people's work and calling it her own. Wife did something unintentionally to embarrass the director in a meeting when the director had taken my wife's work and put her name on it and upper level management saw it. A few days later my wife was put on a PIP by her manager the director even though she had got outstanding remarks on the last quarter review that had ended a month before. Needless to say she did the following. Went and got a better job (director level now) but didn't tell them that. Then went to HR and filed a complaint over the PIP and ethics violations. After some back and forth it ended up with her leaving with a severance.
Really everything I've seen in management as you go up higher in the food chain is that it seems everyone is willing to, and expects others to knife them in the back in a lot of companies.
Another wild, unsubstantiated guess... The reason for him interrupting others, might be the stress caused by not understanding what's being said, but having to hold the professional image
