You are asking about 2 different speed data. First, there is engine RPM, the ECU is the source for that data and is sent to other controllers on the CAN buss.

Vehicle road speed data originates from a speed sensor installed in the transmission (only for '02 in NA,) sent to other controllers via dedicated VSS buss circuit, or from the ABS via CAN from '01 only for Euro models.

The instrument cluster receives road speed from the ABS for display on the speedometer. The IC receives engine RPM from the ECU via CAN and displays that data on the tachometer.

The vehicle road speed and engine RPM associated with the internal ECU variable parameters defined by the parameter IDs you mentioned, are not available for observing via VCDS, being the reference from the OP, because I am not informed sufficiently yet and  It did not occur to me that the inquiry was associated the the internal variables you mentioned  based on the context of the question wording. Maybe I am oversimplifying the intent of the OP. If that is the case please explain why you inferred  the context of the question the way you stated. Not a challenge, only a request for my learning task.

Google translation of FR description you posted:

"The configuration is done via the code word CWGGVFZG. If Bit 0 is set in CWGGVFZG, the speed of the CAN message is Kombi 1 (vfzgkb_w) used. The same applies when bit 2 is set in CWGGVFZG and B_cankbi = 1 receiving the CAN message indicating the Combined. If vfzgkb_w not used and bit 1 is set in CWGGVFZG, is instead the speed of CANBotschaft Brake 1 (vamsr_w) used. Otherwise, the hardware signal is evaluated."

 I do not understand from the FR description, what exactly is being configured. What am I missing from the OP's post associating the situation described in the FR?

OK, I see where you are coming from now. Thanks!