But Llewellyn says Gatland predecessor Steve Hansen did not take such an approach during a 10-match losing run.
Henry's current assistant Steve Hansen, another former Wales coach, is said to be the front-runner to be the next All Black boss.
Wyatt, 30, was a surprise omission from Steve Hansen's original 30-man squad.
BBC: SPORT | Rugby Union | Rugby World Cup | Team Pages | Wales | Owen out of World Cup
The Ospreys board have stated that Jones' successor will be someone of "worldwide calibre", with early rumours linking the region to Steve Hansen, Nick Mallett and Jake White.
New Zealand assistant Steve Hansen, like Kiwi head coach Graham Henry a former Wales boss, suggested after beating Wales that their scrum had been treated unkindly by referee Alan Lewis.
Ruddock then left to take over from Steve Hansen as national coach, and, along with Griffiths and Scott Johnson, led Wales to their first Gram Slam in 27 years in 2005.
And he believes the northern hemisphere experience of former Wales coaches Steve Hansen and Henry - who also led the 2001 Lions - and former Northampton coach Wayne Smith is paying off.
BBC: Oliver is one third of the All Blacks' formidable front row
Clearly, investors like Chris Hansen and Steve Ballmer understand that personal income is one of our most precious and most highly mobile assets.
Hedge fund manager Chris Hansen and Microsoft CEO Steve Ballmer have recognized this.
On Monday morning, the Seattle Times reported that a Seattle group helmed by hedge-fund manager Chris Hansen and Microsoft CEO Steve Ballmer agreed to purchase the Sacramento Kings.
The family members have on multiple occasions reached apparent deals to sell the team to a Seattle-based group, including investor Chris Hansen and Microsoft CEO Steve Ballmer, only to be rebuffed by other NBA executives.
The goal is to block a bid by investor Chris Hansen and Microsoft CEO Steve Ballmer, who have a pending deal with the Maloofs to buy the Kings, move the team to Seattle and restore the SuperSonics name.
The backup agreement would have the Seattle group, led by investor Chris Hansen and Microsoft Chairman Steve Ballmer, purchase a limited ownership of the Maloofs stake in the Kings, a person with knowledge of the deal told The Associated Press on Saturday.
The Olympic flame was jointly lit by four Canadian sports heroes - all-time hockey great Wayne Gretzky, skier Nancy Greene, speed skater Catriona Le May Doan and basketball All-Star Steve Nash after being carried into the arena by paralympian Rick Hansen.
Salford, under the charge of football director Steve Simms in the absence of head coach Shaun McRae, went 10-0 behind after Hansen broke through their line before spinning out of a tackle to score.
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