Glossary
__FilterToConsumerBinding
The WMI object that links an event filter to an event consumer. Without it, neither fires; with it, the consumer runs every time the filter matches.
A __FilterToConsumerBinding instance ties an __EventFilter to an event consumer. Its Filter and Consumer properties are object paths such as __EventFilter.Name="BVTFilter" and CommandLineEventConsumer.Name="BVTConsumer"; it also records a CreatorSID.
Those reference strings are plain text in OBJECTS.DATA, which is how PyWMIPersistenceFinder finds bindings — even deleted ones. A filter or consumer that no binding references is inert. See WMI event subscription persistence explained.