In Azure Data Factory, is it possible to define link service and dataset with dynamic type?

Question

In Data Factory, is it possible to define link service and dataset with dynamic type?

Since the legacy Salesforce connector will soon be deprecated, I want to create a single link service and dataset to support both the legacy and new connector instead of having a if condition in the pipeline to select different activities for different version of the link service.

connector: SalesforceV2 & Salesforce

dataset: SalesforceV2Object & SalesforceObject

I tried to create a dynamic link service but failed to test the connection.

this is how i define the type in the link service arm template.

"type": "@{linkedService().linkServiceType}"

and for dataset, it simply doesn't let me use dynamic type.