What does the "Other-half" Communication Bus look like ??
Is there any pic of it on the Interwebs ?

If it has to satisfactorily quench the dreams of Jolla fans, I suppose it has to be one hell of a communication bus, with sufficient bandwidth!
What comes to my mind is some type of USB 3.0???!!

If it is some proprietary bus, I think there would be a learning & adaptation curve!
Does the Sailfish OS documentation, talk anything about the bus ??