You can connect a combination of 255 ezbs and IoTiny’s

that's actually great, any Documentation or tutorial or a script to be able to accessing an ezb servo from another ezb.

You can create frames for each EZB4 then access them together in your script.

With a servo connected to EZB1 D1, and EZB2 D1

Servo(D1, 180)  # EZB1 servo D1
Servo(2.D1,180) # EZB2 servo D1

As you can see just putting the EZB number in front of the servo number is how you address them in you script

Here is a link that might help also https://synthiam.com/Community/Questions/10188&page=3

Hope this helps

Small correction...

Servo(D1,180)   #EZB0 servo D1
Servo(1.D1,180)  #EZB1 servo D1
Servo(2.D1,180)  #EZB2 servo D1

I stand corrected. The first EZB controller is 0. Thank you Richard