Inactive suppliers picking up suppliers that are paid recently through third party relationship

Summary:

The Inactive suppliers process, picking up a supplier with no active transaction but there is a active third party relationship and being paid.

For example: When we run the process, with below parameters

Suppliers with No Transactions - Y

Months Since Last Transaction - 18

Paid One-Time Suppliers - N

Supplier A has no active transaction. However, there is a active relationship exist between Supplier A and Supplier B. Supplier B have active transaction in 18 months and being paid to Supplier A. I would expect Supplier A not be picked up and end-dated in the process.

Does anyone had similar requirement ? Any suggestions how to achieve this will be helpful.