1. Adobe Experience League - Campaign Classic v7 Documentation
"Delivery (workflow activity)": Under the "Operating principle" section
the documentation states: "When the workflow is executed
this activity will: Duplicate the delivery template to create a new delivery." This confirms that a new delivery is created each time the activity is executed
which happens in each new workflow instance triggered by the scheduler.
2. Adobe Experience League - Campaign Classic v7 Documentation
"Scheduler (workflow activity)": This documentation describes how the scheduler triggers the execution of a workflow. For a recurring frequency
it states
"The workflow will be started automatically according to the defined schedule." This implies a new start or instance for each scheduled time
which then executes all subsequent activities
including creating a new delivery as per the first reference.