The DLC has two different response types - successes and failures. Successes will give you information on how long it took to complete the task, what thread it used, etc. Failures will give you information about the thread it was running on, where the exception occurred, what column it was parsing, and more. Unloading Data also generates a response that will give you information similar to a load call. You can also query the status of a transaction, which will give you another response.
All of these are returned to the user in a json format, and your data orchestrator should parse the responses for relevant information in order to make the best use of the DLC.