Board Thread:Naruto Discussions/@comment-43317375-20200727034617/@comment-32685487-20200727160018

B made a distinction between it and V2 Chakra Mode. B wasn't surprised by it meaning Naruto wasn't the first to use a Chakra Mode like that. I think like Sidd said it was decided by the author to have only Naruto and later Minato use that mode.