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You're not allowed to use trademarks to masquerade as the other party, especially if you're then trying to conduct business as if you were that other party.

Taking a step back: is there any trademark usage that you view as infringing?

Using an example from another side discussion: I hope we can agree that if you made a laptop and called it a Macbook Pro, Apple would sue the heck out of you, and they'd be in the right. Where we seem to disagree is whether it's infringement if you set up a storefront, name it "Apple Store", and exclusively sell products that you've purchased from an Apple-run Apple Store.