Why immortal failed on Gluth

[Hitshade]

Commanding shout was gained by 25 raid units @ 21:03'43.662 which included three treants however Archlight, Arity, and Tyrani never gained commanding shout.

Gluth decimated @ 21:04'00.763 killing Archlight, Arity, and Tyrani.

So bug with commanding shout and treants?

I didnt think Commanding shout wass limited to a certain number of units. We could test this quite easily. I would assume warlock, hunter and DK pets got the buff as well. The fact that treants got them shouldnt be of consequence. Maybe Im wrong.

However, as far as I know it is still limited by a 20yd range. Slow to jump perhaps.

Also theres decimates mechanic to considder. If Archlight, Arity and Tyrani never gained the buff to begin with, there would be no additional health pool to potentially fuck things up. So even if commanding shout is limited to a maximum of 25 units it should not have made a difference.