There is no relation between the two mechanisms.

Lucy does not use the @LcdService-annotated classes. The Lucy back-end has its own service registry.

Similarly, the code that uses the TLcdServiceLoader and the @LcdService-annotated classes does not use the services registered at the Lucy back-end.

See Lucy services mechanism for more information about the Lucy services mechanism, and The services mechanism for more information about the @LcdService services mechanism.