Tyson Fury immediately started with "insults" towards Anthony Joshua.
He has spoken about the time he spent sparring with other boxers.
"I've sparred a lot in my time with amateur boxers. Anthony Joshua was one of them. He knows what happened. It also had to do with a Rolex watch issue," Fury said, among other things.
The long-awaited clash between the two former heavyweight boxing champions is scheduled to take place on December 11 at the Principality Stadium in Cardiff.
That fight will be broadcast on Netflix.
The atmosphere at the press conference is extraordinary.
The fight will be valid for the WBA title.