Are Connections between Whonix-Gateway and Whonix-Workstation Encrypted?

Is Internet traffic and all other operations between Gateway and Workstation encrypted?

communication between workstation and gateway is not encrypted. The traffic flows along the internal network from the workstation on to the gateway. Since the gateway torifies the entire platform, when the traffic leave the gateway, it travels through Tor encrypted.

To encrypt communication of the internal network called “Whonix,” use an openvpn server (I mean set your own server up on the gateway and the client on workstation) or you can use SSH.

The connection between Workstation and Gateway is not encrypted.
But if we install the Extension Pack, then our data can be compromised?

Separate question, please use sperate forum thread.

Please also search if this was discussed before.