Understanding query count in Cloud

I tried to understand my latest InfluxDB Cloud invoice and when doing so I try to understand where the queries generating the query count numbers come from.

It seems like some thousand queries per hour are generated by a Grafana dashboard. The Flux queries executed to get the data are executed every minute but the query count is far higher than that. The Pricing FAQ hints that the query count “broadly” equals a Flux query. Are there cases a Flux query is not the same as a billable query?

I also have a steady stream of 2000 queries per hour that I have no idea where they are coming from. How do I find out where these queries come from? The data from the _monitoring bucket/usage.from() doesn’t tell.