Does load balancer handle request from server to another server?

Question

As far as I know, the load balancer usually handles requests from client to server and then returns the response back to the client. In this case, both request and response will pass through the load balancer.

But, what if the server makes a request to another server? Will that request also pass through the load balancer then reaching to the destinated server or it will directly be sent from the server to the public internet and then to the server? I'm confused about this part.