What is the difference between Binary tunnel and Underpass?

What is the difference between Binary tunnel and Underpass?

Hey Tim,

Underpass is a GUI (Graphical User Interface). Users depend on graphical elements such as icons, menus, and windows to interact with the operating system.

Reference: Using LambdaTest Underpass | A Desktop Application For Localhost Testing | LambdaTest

While Binary tunnel is a non-GUI mode and let’s user to interact thru CLI.