'NestJS: If I want to activate service B from service A should I do this directly or call on Controller B?

Hi I'm finishing up my first api CRUD so not sure regarding this one aspect of it.

If I have the following:

Controller A Service A

Controller B Service B

I want to activate a function in Service B. Should I call an HTTP request to Controller B?

HTTP request would also add in a DTO (Not sure if another DTO is needed if I'm calling it directly from services.

Thanks!

typescript nestjs

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