Invoice Approval Rule: Approval Group & Supervisory hierarchy are sending notification at same time.

We have an Approval Rule using spreadsheet requirement, where we should be able to trigger the Approval Rule for two way Invoices. It should first route to Approval Group and then follow the Supervisory hierarchy.

At the moment, for a 2 way Invoice approval routing, we expect the Approval to go to Approval Group (Group First Responder) to approve, and then to route to the Approval Rule for Supervisory hierarchy. However, it is triggering both the approval rules at the same moment (i.e. Approval notification is sent to all the group members as well as all levels present in Supervisory hierarchy. We have placed the priority on the these approval rules.