How to understand Transaction Diagnostic Report for AP Invoice Approval

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How to understand Transaction Diagnostic Report for AP Invoice Approval

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I am working on a support ticket and have a query about what rules were followed when an AP Invoice was approved.

I have done into Transaction Console and searched for the invoice number.

Search for invoice - click invoice number to view details:

On the next page, I can download the diagnostic log:

The Diagnostic Log contains a lot of information, but from what I can see, it doesn't show which path from the FinApInvoiceApproval Approval Task was followed to arrive at finding the approver name.