Ever yell at there T stop yelling at them?

We were on of our walks, he brought up a boundaries talk. Which always turns hostile. I felt immidiatly angry and upset, but at the same time I felt he was frustrated, which he confirmed.

The rest is a blur. I remember feeling backed into a corner and YELLING at him to stop yelling at me. He quickly took it down to a level that I could barely hear him. Maybe he was just raising his voice a little to get a point across. To let me know it was no longer acceptable. Maybe he didn't? Idkk.

I wonder why I reacted so harshly to him? Anyone else ever YELL at there T?