I think you are looking at the wrong picture.
I've never seen an amp with what they call 'Tesla Coils' which apparently serve the purpose of dealing with voltage spikes. Would love to hear what the community has to say about this topic : ) https://online.nextlevelhifi.com/products/axxess-forte-1-streaming-amplifier
www.audiosciencereview.com
If you look at their boards, including the so-called 'active square Tesla coils', one end only of each inductor is connected to active. The bifilar coils only have one lead soldered. The PC board traces are hilarious:
View attachment 351346
The traces are so poorly rendered, with so few turns and such poor line spacing this that any inductive effect is negligible. Plus, this is not a useful circuit instance even if these were interesting coils.
This is from OP's original link, and represented in the company's marketing materials all over.
It's really hard to make this up, but they did.