When is the procurement license consumed: PO approver clicking into the hyper-link to view PO?

Summary:

There is a duplicate question which is pertaining to when a requester or procurement license is consumed (or if at all) during the approval workflow. Our query is as follows:

If the approval hierarchy is generated at the submission of the Purchase Order, what is the trigger point where a Procurement license is consumed? This is asked under the assumption that the approvers in this hierarchy are not procurement agents/buyers - rather those with only employee roles.

Oracle has previously advised that if an end-user uses the hyper-links available on an approval notification to view or access a PO in the purchasing UI - a license would be required. Is this accurate?