Is the Turbo function allowed, and is Cross Air allowed as well?

What I'm interested in knowing is whether the Turbo function is allowed, since I play on controller and, in many angle-blocking situations, you're left at a disadvantage because of ergonomics. In my case, this happens because I have the action assigned to a rear paddle.

While I'm at it, I'd also like to know whether the use of Cross Air is really allowed or not. I barely play killer since 2019, so I don't really care; it's simply out of curiosity.

On the other hand, I'm not sure whether this is the most appropriate channel to raise these questions.

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