ExpressRoute with Azure Site Recovery for Azure Region

Hi Expert,

I have the following scenario

1. ExpressRoute will be configured to an Azure Region e.g. East US
2. Within Azure, ASR will be configured to another Azure region e.g. Central US for DR
3. Global VNet peering will be used to allow communication between East US and Central so that ASR replication can function
4. Within East US for instance  there will be an NVA

My questions on the above scenario are thus

1. When doing a failover (or in the case of a DR event) from East US to Central US region with the ASR service...will connection to the Central US be able to use the ExpressRoute gateway ?
2. Will a NVA also be required in the Central US site?

Thanks