For the legacy USB Type-C to Legacy cable assemblies which have Rp termination integrated, BCR will treat it as a non-PD source.
So the working will be as per the Type-C specification and not the PD specification, i.e. the PDOs set don't work in this situation. This means that the device wont be checking for FAULT condition based on configured PDOs and actual voltage from source.
Hence, the default 5V provided will not be recognized as a fault condition.