... Ganauso it must be ...

What can you say about a "extension cord" else?
Either it works - or it's broken! But in addition to the function is here also the weight as the decisive criterion for undisturbed enjoyment at home should: a 6 m cable with 40 grams!
Certainly for me this "stability" is not the primary consideration when I enjoy comfortably on the couch the performance of the system. Important to me here is that no cables are constantly pulling on the headphones.

So in short:
All Prima for enjoying at home with the Bose QuietComfort 15 - and on the plane I need it not certainly :-)