Google Cloud VPC Peering
VPC peering allows you to connect Harmony SASE with Google Cloud Platform by exporting the route of your Harmony SASE network to the VPC.
With VPC peering, you need only a single tunnel from Harmony SASE to the shared Google Cloud VPC. The other peered VPC recognizes the Harmony SASE subnets by having its route in their routing table.
Export the custom routes from your shared VPC.