[arghwhat]

Hmm, yes I was conflating a few things there.

However, I'd hold that this is an extension of the USB 3 mess that predates USB-C, even if the x2 mode specifically was a USB-C addition.

The important thing for people to know is that support for USB 3.2 Gen 2x2 is practically non-existent: TB3 came before as a well-established (but premium) solution, and USB4 just two years after to commoditize it. A complicated solution with mid-tier bandwidth and none of the flexibility didn't attract attention, so support is poor.

[klempner]

I mostly agree with you -- 2x2 is a relative rarity, especially before Intel's Barlow Ridge chipsets that actually added 2x2 support.

Which leads to the funny point that, as far as I am aware, the very first 2x2 capable hub chipset was USB4v2/TBT5 that happened to also support 2x2.