Grinding rear end noise

hey all have a 2017 TRDOR. I've had the high pitch whine rear end noise since new. Had toyota inspect it early on an said not to worry about it. Toyota did the recall under warranty as it is a TRD and those were not listed under the recall. Fast forward 60k miles from those repairs and diagnostics my rear end noise has turned from whine to grind. Has anyone else had this issue and know what it could be? I have a video and at 4-6sec then at 25-33sec can be heard. I hear the noise mostly in 6th gear very light throttle on decel, the faster I go and let off the louder it gets.
If any one could chime that would be much appreciated
https://youtu.be/_wogoIRXH5A

 

Bump

 

Hard to hear but does it have a spun bearing / vibration type sound?

 

More of a dry bearing sound. Its definitely from the rear

 

Quite a noisy truck compared to what i've been use to with mine. Whatever this crunching noise is, it doesn't sound good. Almost sounds like something broke thats rubbing against something else.

 

That's what it sounds like to me too.

 

Not sure if inside the diff or carrier bearing. I called toyota so they can diagnose it. Ughh

 

Any ideas about my noise?
https://youtu.be/OAPUJ_owE2c

 

I don't really hear much, all I hear is tires?

 

Behind tires its sound like wow wow wow... Fast