They lightly mentioned it in this interview a few weeks ago as well - I was surprised! https://youtu.be/C5-741uQPVU?t=1726s

Yah, I hope this doesn't end up costing them an arm and a leg :( it was working last night

Shazbot!

"Burning the sky" is a pretty great read / audio book on the topic.

https://www.audible.com/pd/Burning-the-Sky-Audiobook/B07L6PV...

I first saw this effect in https://youtu.be/XEvSTQKO7i4 and always wondered how it was done.

Here's another one

https://youtu.be/tt7gP_IW-1w

And another that mimics the effect

https://youtu.be/FQlhQ-GrzLk

And another that appears to be a mixture of both

https://youtu.be/b4Bj7Zb-YD4