Wayne Smith reveals why the All Blacks have a close relationship with the Melbourne Storm.

Wayne Smith believes the All Blacks' secrets are safe with the Melbourne Storm as they continue to build their relationship with the Australian rugby league club.

Smith has just spent time in Melbourne as the Storm squad prepared to resume NRL preseason training.

It's a partnership that started in 2010 in Auckland and late last year saw Storm head coach Craig Bellamy and football director Frank Ponissi join the All Blacks in Chicago for their test week against Ireland.

GETTY IMAGES All Blacks assistant coach Wayne Smith has been with the Melbourne Storm on an information swapping exercise ahead of their respective seasons.

"The All Blacks have a pretty close relationship with Melbourne Storm," Smith told Storm TV.

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"There's a lot of synergy … there is a lot of cross code stuff that can be shared without worrying too much about competition.

"It's a safe environment, it's a good place to share ideas and I think it benefits both of us."

Smith will be hoping the All Blacks' methods are indeed under wraps.

Worryingly, Storm defensive coach Jason Ryles was brought into the England rugby setup for a couple of weeks late last year by their Australian coach, Eddie Jones, to help Paul Gustard.

England appear to be the All Blacks' biggest threat to their world No 1 ranking and hopes of a incredible World Cup hat-trick in Japan in 2019.

Smith said the synergies with the two successful outfits were based largely around culture and a desire to be better and never rest on their laurels.

"There's definitely a lot of similarities (between the two organisations), particularly in terms of the culture developing the leadership by the players, the empowerment of the players," Smith said.

"They are high performing environments but they care about people, there's a love of the game that characterises both organisations and a love of the jersey.

"There are a lot of things on common that we share and learn off each other to try and improve. If you asked anyone at either club they would say that it's one of the biggest things in their lives.

"The stakes are high and the consequences are high if you don't win. All those things together create flow, high performance and winning teams.

"It's a culture of continual improvement, always trying to be better."