'We are asking one referee to do it the way they did it when blokes like me were playing, jogging around the field basically.
England have otherwise been given a clean bill of health ahead of Saturday's visit of New Zealand to Twickenham - the first time they have faced the world champions in four years.
Shields represented New Zealand at Under-20s level but is now an integral part of head coach Jones' England set-up.
"The only people that don't understand what it's like to be a head coach of an global team are the people who have never been one", Hansen said.
Teammate Ben Smith said of the reception he and his teammates received: "There wasn't too much fuss when we got there - we were down the front".
'So I think the referees are doing a great job.
Afterwards, England coach Eddie Jones was under the impression the All Blacks would have been at their base near Teddington "drinking cups of tea, maybe having some scones, saying "oh, we'll take these guys".
"They play different than we do, it's not to say they play a better game or a worse game, they just play differently".
Hansen said he and the Australian speak or text roughly once a fortnight: "You don't ring up people you don't like, just because they are doing the same job as you", Hansen told a news conference on London on Monday.
"I think we've got over the stage of seeing him in a white jersey now".
"We had a meeting with the senior players last night (Sunday) and have a pretty good idea how we want to play against New Zealand". The last time England won a Test was two years prior at the same venue with a convincing 38-21 victory.
"To win a test match against a good opponent you've got to do your homework and things have to fall your way a little bit".
"Does it mean we've got to be on guard against England?".
"If you're good enough to take that away from them then you've got to be good enough to score points. That's the mark of a good side".