All Blacks coach Steve Hansen said Barrett (pictured with Anton Lienert-Brown) could feel proud of his effort as he had successfully driven the side around the field, especially after the forwards took control to give him quality ball to work with. Barrett picked up 21 points from the game with a try and eight conversions.
Barrett said there had been challenges early on but every team they played had moments in the game and it was a case of trying to limit the amount of time Namibia had.
"It was a good challenge and I know I enjoyed it throughout," he said.
Barrett had to overcome the mental barrier of missing his first two shots at goal, the second being charged down.
"I'd never been charged down before in my life. I didn't want to speed things up, I just simply took two metres back and tried to keep my same rhythm and I was lucky enough to get on a bit of a run then," he said.
Whether he would look to play first five-eighths in future was a different matter.
Playing in the position was another string to his bow and would grow his understanding of the game, he said.
Outside him Anton Lienert-Brown provided another example of the consistency he had achieved in his game in 2019. He scored two tries, the first a fine effort to break three Namibian tackles and gain some scoring momentum for the All Blacks.
He said he was tired after the game as they had to work hard, especially with the way Namibia had put them under pressure during the first 30 minutes. The lesson would be that you had to earn the right to take opportunities.
"We were probably looking for plums in that first 30 and not doing our job in the moment, so the positive is we will learn a lot from that 30 minutes," he said.
"As a team it was pretty good to see that second half be a lot better," he said.
Centre Jack Goodhue said the team was building nicely, they were fortunate enough to be in a position where they could manage minutes for squad members.
Namibia had been very accurate defenders who had made the most of their attacking opportunities.
"They built more phases than Canada which is good because it put our defence under pressure and there was a couple of times when they weren't too far from scoring."
He said he enjoyed pairing with Lienert-Brown in the midfield because he was such a productive player. Lienert-Brown's first try was typical of his ability because he was explosive and a hard player to tackle," he said.
"I know how hard it is from the Chiefs stuff so it is good to have him in my team," he said.