I have spent a lot of time reviewing this feature of the 20s but am having trouble understanding exactly how it works and have a number of question that I can't seem to find answers to:

Firstly, it appears that each device links to two other devices such that all devices are connected in a chain. Is this the case?

Would this mean there could potentially be a small delay relaying a message from one end of the chain to the other and getting a response?

And does it also mean that so long as each pair of devices is within range of each other than the entire chain could extend such that the first and last device are no longer within range?

It also appears non-Sena devices don't have the ability to "continue" the chain so non-Sena devices need to be located at either the "Head" or "Tail" of the chain but for some reason you can only have one "Sena-Sena" link between. Is there any reason you couldn't have a "X-S-S-S-Y" chain (there "S-S" means Sena connected to Sena and "X-S/S-Y" means Sena connected to non-Sena?

Also, why is the length restricted to 8 for the 20s and only 4 for the SPH10H-FM?

And finally, when setting up the conference intercom with the smartphone app is it just linking all the devices in 3-way conference intercoms in exactly the same way as discussed in 15.3.2 of the manual or is it doing something different? As in is there anything special about the device that established the conference group?

Thanks,
And all the best,
Slarti.