"I'm a big believer that you never stop learning in this game and you don't have to stay within the game to learn about it," Umaga said. [Lowe has a lot] of expertise and knowledge and he's more than willing to help.
"He's been great. The players know him and he's been adding a few tidbits here and there. He's a wealth of knowledge and not just for myself but for us coaches and hopefully for our players coming through."
The days of the rugby codes treating each other as enemies are long over and high-level coaches are increasingly sharing information between sports.
New South Wales coach Laurie Daley has been invited into the All Blacks inner sanctum several times by coach Steve Hansen and New Zealand Super Rugby coaches often travel to the USA and Australia in the off season to check on other professional sports' facilities and methods.
Many are more comfortable sharing secrets with their counterparts from other sports because they know they won't be used to help the opposition.
For Lowe, when it all boils down there is little difference between league and rugby.
"I see it just as footy," he said. "It's all man management. Both codes have players with their skills and as long as time goes on there will be a debate about which is better but by and large if you watched the Blues [training] out there today there's no difference to what NRL players do.
"I want Tana to do well and I want the Blues to do well. I think Auckland needs the Blues to do well and I enjoy watching young guys going through their paces. You'd have to have ice in your veins not to sense the energy that was down there today. And that doesn't just happen, it takes work to get to that stage and that's what Tana has done."