Speaking to The Athletic, the former referee told of receiving a phone call in August 2022 after Liverpool drew 2-2 with Fulham. Moss said: "I picked it up, and there was that undeniable voice that (Klopp) has. He said he wanted to talk about the game on Saturday because he felt (Roberto) Firmino had barely touched the ball. He said, ‘Your referee kept getting in the way every time he was about to receive the ball. Every time he passed it, Andy Madley appeared like a ghost and slid into the pass’. “Andy was in the position that I expected him to be but that was no good for this style of play.
"That was a game changer for me overnight. So we sent it to the referee. We sent it to all the people that were observing the referees. And that’s why, in that moment, we decided we needed analysts. Because the way we referee had to change. And we needed to have that kind of information."