Ornn Bellows Breath does not stop skarner ulti

Bellows Breath / ACTIVE: Ornn marches Unstoppable unstoppably in the target direction with 35% reduced Movement speed icon movement speed for 0.75 seconds.

Skarners ulti Impale ACTIVE: Skarner Root icon roots the target enemy for Channeling icon0.25 seconds, during which he rears his stinger and brings it down, dealing them magic damage, Attack damage icon 60% AD physical damage and Channeling being able to Suppression icon drag them for 1.75 seconds. At the end of the duration, the target takes the same damage again.

If Ornn uses his Bellows Breath before Skarner uses Impale then skarner uses Impale during Ornns Bellows Breath Ornn is still affected for the entire duration of the ulti instead of being immune to it.

Step 1: Use Bellows Breath on Ornn

Step 2: Use Impale on Ornn

Step 3: Ornn should be immune to the CC he is unstoppable

Happens 10/10 times