All Blacks great slams Reiko Ioane and Sevu Reece following loss to Los Pumas

New Zealand succumbed to Los Pumas in Buenos Aires on Saturday where they once again struggled to find fluency on attack.

While it was not solely their fault, Rieko Ioane and Sevu Reece failed to make an impact with ball in hand and were exposed by the hosts' aerial game.

Ioane has not performed at his best since Robertson took charge and Reece also has a question mark alongside his name.

There have been calls for the head coach to move them aside to give younger players an opportunity going forward.

Marshall agrees with that sentiment, pointing to the need for all Test wingers to be effective aerially, although he stopped short of writing them off completely.

"You've got to ask the question, why is it going wrong? Those players have got to be in the zone, and to be a modern day winger, you look at the two wingers out of South Africa – [Cheslin] Kolbe and [Kurt-Lee] Arendse," he told Sport Nation's The Rugby Run.

"They are diminutive in stature, but they are amazing in the air, and they are not afraid to go up, leap and contest for the ball.

"As a modern day winger, you have to be able to do that and our wingers were non-existent.

"I certainly feel that we need to look at some different players in those jerseys to see whether or not we can get on top of the back three. Our counter-attack is not working either."

Marshall was particularly critical of Reece's performance with the former All Black claiming that his work ethic actually had a negative effect on the team.

"When he doesn't get the ball delivered to him, he wants to go looking for it but what it does is leaves us vulnerable on the wing," he said.

"Quite a lot of times he was getting in there trying to pick and go, trying to basically play half-back in and around that zone.

"When he's doing that, that's leaving us particularly vulnerable for counter-attack and they (Argentina) seemed to open us up on our flanks quite well."

Even the bench was unable to change the course of the game and Marshall was not a fan of Robertson's replacements.

The head coach went like-for-like in the decision-making slots as Finlay Christie and Damian McKenzie took over from Cortez Ratima, who came off injured, and Beauden Barrett respectively.

Quinn Tupaea also came on, with Billy Proctor making way, but it left them with no out-and-out 13 in the midfield.

"I was a bit confused with some of the substitutions we made and the way that they messed around with the backline," Marshall added.

"It didn't look like we had great rhythm and we looked like we were trying to punch our way through them, whereas they were using their block plays quite well, they were bringing their wingers in from a bit of depth and were causing us problems."