I'm not able to access the provided link.
Could you please share me the URL of the link..
I am not able to recover the URL of the link, but in terms of this question, there is no guaranteed relationship that identifies from a process instance the 'Execute a Process' job instance that launched it.
Execute a Process tells the process engine to start a process instance, but it does not record or log the ID of the started instance, and the process instance itself runs asynchronously from the job that launches it.
If this is information that is important to your needs, you may want to raise an Idea asking for (something like) the Execute a Process job to record or store the process instance it started, as that would be an improvement requiring a change in how the product is designed today.