File Share Migration to SharePoint Online via ExpressRoute using SPMT

Dear All

One of the customers want to migrate File Shares to SharePoint online migration and customer already setup ExpressRoute between their on-premises and Azure Cloud.

For this migration, we are proposing SharePoint Migration Tool (SPMT) for moving file shares to SharePoint online, however, we do have some clarifications on using ExpressRoute

1. Whether it is possible to migrate files from on-premises file shares to SharePoint online via ExpressRoute instead of normal Internet
2. If possible, does the SPMT supports this kind of migration, since i haven't seen any settings in the tool to leverage ExpressRoute for migration
3. Any other points we need to consider when migrating via ExpressRoute

Any support is much appreciated.

Thanks

Chandrasekaran