You could set up a Tailscale network between the two Zones so now you’re essentially on a LAN.

Then you can choose whatever streaming mechanism you want

Sourdough nicely toasted with butter and sour cherry preserves

Yo that’s super cool! My nerd brain went straight to a virtual table top map for D&D

What was the map used for?

rysnc might be a faster and more reliable option. It can compress the files for transfer and does checksums after the transfer is complete

I used something like this to transfer 12 TB from offsite to onsite with zero failures

rsync -arvzip --progress /path/to/host /path/to/destination

You can set up a screen and let this run in the background all the time