Display multiple casted android devices on 1 TV simultaneously

[AC Question]

I am going to setup a harness for automation of several android devices. I would like to display all of them on one screen if possible. Is there a way to cast multiple devices to one screen at the same time? If this is not possible, what are some other alternative options? Currently I am limited by the computer using the USB connection on the droid devices.

 

[B. Diddy]

Welcome to Android Central! Here's one option, if you have a Samsung TV: Smart Hub > Multi-link Screen

Other multiviewer hardware options seem to be pretty pricey, since they're intended for professional use: https://www.bhphotovideo.com/c/buy/Display-Management-Systems/ci/17509/N/3951723487