"In addition to Nano Crystal Coat with its proven high tolerance for incident light from a diagonal direction as well as a vertical direction, a newly developed anti-reflective coating, ARNEO Coat, that is more eective for incident light from a vertical direction specifically, is adopted. Utilizing both of these coating systems, ghost and flare are radically reduced for incident light from any direction." (https://cdn-4.nikon-cdn.com/e/Q5NM9...uc2_t9Tr8iw3d-qf0=/Misc/NIKKOR-Z-Brochure.pdf)
Thanks, Nick. That link was quite helpful in explaining how the nano coating helps.Some more here (https://photo.stackexchange.com/questions/22151/what-does-a-nano-crystal-coat-do-on-this-lens) , but it's somewhat beyond my pay grade! I did learn that it is based on the design of moth eye.