Hi @TGeorge1,
HubSpot workflows have various mechanisms to unenroll contacts automatically once they meet specific criteria. In your case, that could be a purchase. You could specify a purchase as a workflow goal: Use goals in contact-based workflows
That would mean that contacts go through your workflow actions until they purchase. Knowing that, you wouldn’t need a list but could either simply add the actions that you wanted to add in the second workflow – or, if you want two workflows, simply use the “Enroll in another workflow” action at the end of your first workflow.
Contacts will only reach that point if they don’t meet your goal = purchase.
Best regards!