I was referring to an application/hardware that sat directly on the CAN bus, not a part of the infotainment system whatsoever. Something totally separate that h

I was referring to an application/hardware that sat directly on the CAN bus, not a part of the infotainment system whatsoever. Something totally separate that had only 1 small function, to authorize access to CAN communications for "unprivileged" things such as the infotainment system. So we're in complete agreement.