I’ve always found this a bit confusing to wrap one’s head around.
Hopefully I’ve not messed up my understanding of this.
I put together this diagram:
My understanding or way of comprehending this is that the disc side spokes being always shorter on normal wheel builds (not asymmetrical rims) - asymmetrical rims give those spokes the chance to be slightly longer and therefore more in balance / matching the non-disc side’s longer spokes.
So my brain sees the disc side spokes as reaching over as far as they can to the asymmetrical “bulge” and the right hand side’s longer spokes connect up like they would on any wheel build.
I also think visualising the disc side as needing more “space” for the disc etc - and useful as you want that side to be on the side of the asymmetrical rim with more space in the carbon surface area.
This video from around 5mins helps I think:
Please correct me people if I’ve got this backwards but so far I think I’ve got the puzzle locked in my head.