Parse response from `InvokeRESTAPI`

Question

I have an InvokeRESTAPI task that triggers a Power Automate flow. On my task definition I also have the following:

waitForCompletion: 'true'  
successCriteria: eq(root["status"], "successful")  

and as expected the pipeline resumes only after the automate flow replies back, something that might take a while. Having the success criteria field implies that I should be able to possibly get the reply from my flow and parse it. Moreover while the pipeline is running it displays the following:

Response here is always empty. Nonetheless would there be a way for me to receive some information back from the InvokeRESTAPI task, and if not what would be the best alternative to achieve this.