i bought a usb type c extension cable and was expecting some weirdness because usb type c is hard, but idk what to make of thispic.twitter.com/admNXhZQ3f
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This would work for standard cables, but captive alternate mode, dock, or other detachable applications are allowed to redefine the second D+/D- pair so this could cause a problem for those.
Of course those have to deal with dumb USB2.0 only Type C devices that short the pins anyway, but those wouldn't trigger the alternate mode. A hacky extension cable that shorts them *would* allow that, and that could cause a short circuit between different data lines.
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(This is of course quite spec-lawyering, I had to go through and check every for any allowed usage of B6/B7)
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ah, I was looking a while ago to see if there were any actual usages of the second pin pair and couldn't find any, since all the alt modes i'm aware of still use D+/D- and support USB2
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