"additionalMetadataId": "/providers/Microsoft.PolicyInsights/policyMetadata/PCI_DSS_v4.0.1_9.5.1.3" ...
As I described here, Power BI can send SQL queries in parallel in DirectQuery mode and you can see from the Timeline column there is some parallelism happening here – the last two SQL queries ...
SELECT o.order_id, c.customer_name FROM orders o JOIN customers c ON o.customer_id = c.customer_id; ...