Canon R8 has Hidden Kill Switch! HDMI Recording to Ninja V

Canon R8 has Hidden Kill Switch! External HDMI Recording to Ninja V

Can the Canon R8 be used with Atomos Ninja V to record longer 60 FPS videos, or at least 30 fps ones? Can you use the Canon R8 as a streaming camera for longer streams or does the Canon R8 has some other hidden limitations for external recording? Does the canon R8 has clean HDMI at all?