I was taught they're opposites on the left right scale, the other redditor offered some information from Wikipedia that suggested they're both fascism. So dear experts, what does history say?
I am the other redditor. For reference, the discussion we were having can be found here. I argue that Naziism was essentially an offshoot of Italian fascism rather than its opposite, and that both are properly classified as far-right totalitarian ideologies.