Questions about Cardo Freecom 4x Duo

With the Freecom 4x, can all 4 bikers already communicate with each other? I have only seen sketches showing that the communication works "chain-like" and not like in a network.

Hello, I have two friends who have the Cardo Freecom 2x. I understand that I can't connect with them because they are limited to two connections. My question is as follows: if I opt for the Cardo Freecom 4x, will I be able to connect to my two friends in a conference, i.e. I will be able to hear both of them, they will be able to hear me and also hear each other? Is this possible? I can't find a clear answer to this question on the Internet, so I'm asking it here. Thanks in advance.

For example, does the Duo pack come with two chargers, or are these items only included once?

Does this product come with the JBL headphones and microphone?

Regarding the above item, 18334073, what does "used product with slight wear" mean? Is this a customer return product that has been tested and returned? Or a demo item? Or something else?

What is the difference with the Cardo Freecom 4x Duo JBL product? Which is twice as expensive?

Are they plug and play or do I have to connect and pair them myself so that I can talk to the second one?

I have two small questions. Firstly, is it correct that the Freecom 4x is the latest model from Cardo? And if I have two helmets, can I also add/buy the Art 9161711 (cardo audiokit freecome serie)?

What is the difference between this product and this item number: 10393914 ?

This Is the duo pack, right ?