Background: A colleague asked me an interesting question about an Azure Virtual WAN scenario their customer was facing. The customer is using Azure Virtual WAN with a single virtual WAN hub, which was placed in the West Europe region, and this hub had been deployed before Azure Virtual WAN routing intent was available (https://docs.microsoft.com/en-us/azure/virtual-wan/virtual-wan-routing-preference-overview). The customer had deployed a number of virtual networks in West Europe and was using a tiered vnet model in West Europe https://learn.