Ian Foster believes New Zealand are happy to stay patient with Sonny Bill Williams despite having a midfield quartet "jumping out of their skin".
Cross-code international Williams racked up his 50th New Zealand cap as the All Blacks eased past Australia 37-20 in Yokohama on the last weekend of October.
The 33-year-old powerhouse centre should now line up against England at Twickenham on Saturday, with All Blacks bosses still confident in his ability to turn it on when it matters most.
"Sonny's had the least rugby, he's still finding his top form; I think that's fair to say," said New Zealand assistant coach Foster.
"I don't think our patience (in Williams) will be driven by his background, more based on how we see players perform in training.
"I think when we look at the physical nature of the game, how they are training, sometimes things are going really good off the park and it hasn't quite gelled to the extent they want on the park.
"Sometimes players are deemed to have had a quiet game but - in reality - they may not have had too many opportunities to show what they are good at.
"We've got a whole lot of players who have had injuries this year, significant injuries over time, and they've come back and at various degrees of accuracy in their game.
"But also some of them have taken a little longer to get their feet right.
"So as long as we're seeing improvements in training, things are going good and the attitude's good, I guess we just keep on making decisions we've been making.
"All our midfielders right now are actually jumping out of their skin, to be honest.
"In the last two weeks, the energy levels and work rate is as good as it's been all year in that group.
"Then you put the performance of Ngani (Laumape) in Tokyo into that mix and that creates it's own degree of pressure doesn't it. So it's a nice place to be."
