What I think is truly amazing is how truly rare it is to see a home console move into an arcade platform, instead of the other way around. Almost always, the home system was derived from lessons learned from more expensive, rugged, and elaborate arcade hardware.

Sometimes, this overlap was quite profound but not 100%. NeoGeo home consoles famously use the same hardware and software as their arcade counterparts, but the game cartridges were not pin-compatible. The Nintendo VS line were technically the same as a Famicom/NES, but not the same build; the software has subtle differences. Perhaps the Nintendo PlayChoice would count but again, it's not like they used NES mainboards to build those.

So, the idea of taking a Nintendo console mainboard and grafting it to SEGA-designed components so it can run in a dedicated arcade cabinet, is just wild to me.