"He was definitely influential in the nines and, I've got to be honest, in hindsight, making it nines is what has made it so damned successful because Mal was on the money."
Meninga, a three-time premiership winner, says nines is the best way of promoting league because it holds true to the basics of the game.
"You've still got to take control of the ruck, you've still got to create momentum by going through the forwards to expose your space out wide, so nothing has really changed tactically," he said.
"But there is that fairness with defence; that's the real gain for from nines - it still promotes the defensive qualities of the players.
"I'd played sevens before but nines is a better concept and it is league's vehicle to take around the world and expose all nations to our great game."
He is full of praise for what Lonergan has achieved with the nines and says his entrepreneurial and promotional skills were obvious when he lured the Raiders to New Zealand on a series of memorable pre-season visits in the early 1990s.
"Deano had a lot to do with all of that because he brought us over there for some trials where we played against local teams and other Winfield Cup sides," said Meninga.
"He was back playing for his beloved Glenora Bears and from there he made the decision with the Raiders club to try to promote games over there."
Lonergan acknowledges the immense popularity of the star-studded Raiders sides helped league reach new heights in New Zealand.
And he says Meninga's influence is still being felt today.
"Way back in 1991, '92 and '93, I brought out the Canberra Raiders because they were the hottest team around at that time. "Every single one of those games Mal Meninga played in.
"That was one of my first business ventures and we sold out Carlaw Park three years in a row. It was a pretty good precursor for the NRL, or the New South Wales Rugby League at the time, to look at it and go 'wow, this is really popular'.
"Obviously the wheels were already in motion by then [for the Warriors inclusion] but I'm guessing those games were confirmation that the game was popular. That's all led to the great success of the game. Mal's had a major impact on what league and what the nines tournament looks like."