If you work in GCP support, have you ever looked at the Cloud Spanner project(s) in Pantheon? There are thousands and thousands of Cloud SQL VMs sitting in one

If you work in GCP support, have you ever looked at the Cloud Spanner project(s) in Pantheon? There are thousands and thousands of Cloud SQL VMs sitting in one project, so it's absolutely plausible that there might be some traversal possibilities.