Calling an Odata service inside an existing ODATA Service

Hi Experts,

I have a requirement where I need to call one OData service as an input to other OData service in a single API call from third party application.

I tried to include existing Odata service into other & setup an Association between them using common property but the o/p is not what I am expecting.

Challenge - Second OData service is built up on Dynamic Entity Set creation concept.

https://blogs.sap.com/2018/02/11/create-dynamic-entity-model-in-sap-gateway/

I have implemented Expanded entity set method for this. Any help would be appreciated.

Thanks