Joe Schmidt's controlled Ireland squad environment is borne out of not wanting to give opposition any potential clues to their approach, according to Bernard Jackman.

The New Zealander has presided over the most successful period of Irish rugby, but at the same time media dealings, and indeed interactions from staff and players, have been more controlled than in previous years.

In Japan, it has been noticeable that while Wales have trained in front of huge numbers and sent out community officers to drum up more interest in the team as well as looking to exploit commercial interests, Ireland’s exposure has been much more low key.

"Wales went after that approach, but Ireland’s is very different. They want to get in, do the business and get out," Jackman told the RTÉ Rugby podcast.

While rumours abounded during the 2007 World Cup of unhappiness in the camp, Jackman says that the "leak-free zone" is simply how Schmidt operates.

There's all kinds of cloak and dagger stuff

"Joe likes to keep it quiet. I know he worries about team selection and team leaks. He doesn't want to give opposition coaches an extra couple of days.

"There is an Ireland team [to play Scotland] going around WhatsApp at the moment which would lead you to believe Keith Earls and Rob Kearney are out of this game, yet they were presented at training yesterday for the first 15 minutes.

"There’s all kinds of cloak and dagger stuff."

The RTÉ Rugby analyst disputes that it is simply a fear factor of the authoritarian in charge.

"It’s not just fear of Joe, it’s how he sells the importance of a tight ship and a unified approach. You have to put the collective above the individual. He feels this is how they will achieve their dream.

"The problem is there is a level of layers and things can get out, often through no malice. It’s a very difficult thing to control. It’s something Joe puts high value on."

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