New Zealand write to ICC over DRS not-out decision on Australia's Nathan Lyon in Adelaide Oval Test

New Zealand is still seething about Nigel Llong's baffling verdict in the day-night cricket Test and has written to the International Cricket Council.

Third umpire Llong ruled there was not conclusive evidence to dismiss Nathan Lyon during Australia's first innings at Adelaide Oval.

Lyon had all but walked off the field, the screen at the ground having shown a big Hot Spot mark on his bat.

However, Llong felt he was not certain Lyon edged the ball so he refused to overturn the original not-out verdict.

BlackCaps skipper Brendon McCullum was shocked the review was not successful as were most commentators at the game.

It proved a major turning point in the match, which Australia won by three wickets on Sunday.

Australia would have been 9 for 118 if Lyon was dismissed for a duck, instead it posted a first-innings total of 224.

NZ coach Mike Hesson could hardly hide his fury on Monday.

"It was excellent, wasn't it? I think everyone at the ground saw what unfolded," Hesson said.

"It's been spoken about a lot. We've certainly made a representation to the ICC and at present we're still awaiting an acceptable response."

Hesson contacted match referee Roshan Mahanama but was tightlipped on what his side was specifically demanding from the ICC.

"There's been official representation from New Zealand Cricket, and from the team management as well," he said.

"We're going through the proper channels and we're awaiting a response.

"There is a process that needs to be followed with these decisions and we need to make sure that process was followed correctly."

Hesson remains in favour of DRS

However, Hesson made his views on Llong and the Decision Review System (DRS) patently clear.

"I don't think there's anything wrong with the technology at all," he said.

"The technology has got a bit of a bad wrap.

"We've put our case forward and we are awaiting a response."

SOUNDCLOUD: Interview: Darren Lehmann

Darren Lehmann felt for his counterpart.

"If I was probably umpiring I probably would have let him keep walking," Lehmann told ABC Grandstand.

New Zealand veterans McCullum and Ross Taylor both suggested Llong's verdict had a clear impact on the game.

Hesson noted his side will "never know" whether it could have changed the result.

"The game carried on and took a number of other twists and turns after that, so it's something that I can't answer. But it certainly had an impact," he said.

Hesson did not seek out Llong during the match and said it would be wrong to do so.

"We don't talk to umpires involved in the game during the game," he said.

"We try and go through the appropriate channels. Roshan Mahanama's the match referee and he's the initial point of contact."