I'm not sure if it's supposed to happen or not - doesn't seem to me like it would be something sensible but I'm not a mechanic either. Just referencing what was a supposed symptom.
I'm just letting you know the specifics others have reported & what I experienced & heard in the loaner I was driving for 3 weeks. I didn't grab the bell housing to check it, but I did test the 4WD portion & the sound I heard went away in 2WD so I jumped to the conclusion it was the same thing. Your sound, if what I was hearing in the video is "the sound" about which you're concerned (the clinking), isn't what I would ever classify as a jingle and I didn't have to stop & go to make it happen in the loaner. For me, it happened at speed while driving around and was a consistent sound, meaning it keeps happening without ever braking.
At the same time, I can't say for sure your sound isn't related to everyone else's concerns. Make sense? If you're truly worried about it, take it into the dealership and at least get a diagnosis - maybe it's something completely different, which is very possible, and they can fix it. Sure, it's a PITA but knowing what it is and the status of the problem might give you a bit of relief if it's really getting to you, which I can completely understand. Just trying to help you self diagnose if that's what you're after. Ultimately, it's up to you.
I wish I could help you more - I'm experiencing annoying/concerning noises myself but they've been diagnosed (dated 10/2018) and GM still hasn't found a solution for it (see thread/URL below for that one). In that thread, the OP described similar sounds and conditions which I heard but the causes of the sounds were completely different. The OP in that thread has yet to reference anything other than a transmission planetary gear, so not much info I could pass along to my dealer or info on what led to them pointing to the transmission. My dealer used chassis ears to find my chirping sound (which could resemble a belt a bit) and it was a completely different area causing the sound (supposedly).