Search function shows it coming up in 1 thread. Stumbled onto this video by the creator: https://www.youtube.com/watch?v=cgdXj75VSMo
What a neat resource. Clicking around a bit, found this motherboard: https://mobomaps.com/board-viewer.html?board=asus-tuf-gaming-b850-plus-wifi
Which has bifurcation… but not for the GPU, which is where you’d usually expect it.
Or this board: https://mobomaps.com/board-viewer.html?board=gigabyte-x870e-aorus-elite-x3d-ice&dispSlots=1&switch=swgrp_gd9a9%3A1
A gen5 M.2 by 2, if you don’t want USB4, for some reason.
Lovely filtering, color coding, making the mobo overview clear real fast. The overview makes stuff a lot more clear.
Currently only AM5, it seems.