Mr Boyle asked how his parents reacted to the attacker’s violent behaviour.
“It didn’t make sense to try and punish him,” he said. “Also, there was a heavy risk in doing so.
“We said there was a general risk to life in general conversation, if you try to confront him… it wouldn’t be responded to well.”
When Mr Boyle asked if his parents had lost control of his brother, Dion agreed.
When asked about his brother reminding him of a character from the film No Country for Old Men, Dion said: “I’ve been told that character’s meant to be a sociopath and that’s why I used the word there”.
Dion said the last interaction he had with his brother was in the summer of 2023 .
He confirmed that their parents asked the killer to say goodbye to him as he was leaving to see his friends and his brother threw a bottle at him but the door had closed before it hit.
The inquiry continues.