VCONN vs CC2 on 24-Pin USB-C breakout (Homemade SuzyQable)

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1

I have a homemade SuzyQable using this usb-c breakout board. This board is linked from the DIY video on making your own SuzyQ. Around 3:45 (and a few other times), Mr. Rosenthal refers to pin B5 as “CC2.” However, the linked board, as well as other boards I have googled, as well as some other testimony deny the existance of CC2 on a male USB-C breakout board. Sources allege that the B5 pin should be VCONN. I’ve checked with GPT as well.

I treated the VCONN pin as the CC2 pin and soldered my connections all the same. I plug my cable into a school computer running RedHat Linux, but ttyUSB* do not appear under /dev/. I want to clear up my confusion on CC2 vs VCONN to determine if the failure point is there.
Did I solder my cable correctly if I treat the pin B5 all the same (whether it is VCONN or CC2)?
Did I use an incompatible breakout board?
Otherwise, I must assume I soldered the board poorly. In that case, I’ll order this board with terminal blocks (or solder a terminal block to an appropriate board)

And at that point, if the cable still fails, I’ll have to assume that my schools PC’s are incompatible with my homemade cable.

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I ordered a ready-made chip that would CCD my Chromebook. I don’t know if my cable was the problem or not, because I threw it out. I used the manufactured cable and it would not show ttyUSB* on the school Linux.

Then I realized I could use the same Chromebook with the VT-2 shell. The cable worked within the same Chromebook, looping from a USB-A to the charging USB-C port.