Does it require entanglement? No.

> Direct counterfactual quantum communication on the other hands relies on something other than quantum entanglement. Instead, it uses a phenomenon called the quantum Zeno effect.

Does it violate the speed of light? No.

> It works based on the fact that, in the quantum world, all light particles can be fully described by wave functions, rather than as particles. So by embedding messages in light the researchers were able to transmit this message without ever directly sending a particle.

Is this a sleight of hand? I don't know... ("New system of angular motion doesn't require radians! Uses 'degrees' instead.")

> ...all light particles can be fully described by wave functions, rather than as particles...