Former Warriors rugby league coach Ivan Cleary with All Blacks hooker Dane Coles at a training session in Dunedin.

Former New Zealand Warriors head coach Ivan Cleary was an interested observer at the All Blacks' training session in Dunedin on Tuesday - a day after Eddie Jones revealed a rugby league connection on England's historic tour of Australia.

A resurgent England's head coach used the experience of former NRL star Andrew Johns at a training session in Sydney on Monday ahead of England's bid to cap their first series win over the Wallabies in Australia by completing a 3-0 whitewash at Allianz Stadium on Saturday night.

Johns, who has worked as a consultant with several NRL clubs and the NSW State of Origin team since his retirement, worked with England first five-eighths George Ford and Owen Farrell.

"Guys like Andrew Johns touched the ball 50-60 times a game. They had fixed defenders, (had to ) know when to drift and know how to use you eyes and where you position your hands," explained Jones.

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"For those guys to have that lesson is invaluable and they will remember it for the rest of their lives."

The value in Cleary, who coached the Warriors from 2006 to the 2011 NRL grand final, attending All Blacks training was not as clear cut.

Once the session was open to media, the former fullback had no hands-on involvement though he had a brief chat with hooker Dane Coles and second five-eighth Ryan Crotty.

All Blacks assistant coach Ian Foster downplayed Cleary's presence, pointing out Silver Ferns coach Janine Southby and her assistant Yvette McCausland-Durie were also pitchside at University Oval.

"He just popped in, he's around for a few days. We've got Janine from New Zealand netball too.

"It's not new is it? There's no dark secret here, we're not going to open a league franchise," said Foster.

"We enjoy talking to other coaches from other codes. It just happened to be they were both scheduled to come in this week.

"I'm sure we'll pick up as much as what we give them."

Foster said Cleary had asked to observe the All Blacks' preparations for Saturday's third and final test with Wales at Forsyth Barr Stadium.

"He asked to come along to see how a few things in our operation operate."

Sacked by the Penrith Panthers at the end of last season, Cleary has consistently been linked as a potential replacement head coach for struggling NRL clubs, including the Warriors.

When Andrew McFadden was under pressure following the Warriors' poor start to the season, Cleary urged the club to persevere with his fellow Australian.

Last month Cleary joined the NRL as a consultant for referees and the match review committee.

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