[Gameplay] Kassadin riftwalking out of Soraka Equinox, interaction between Zonyas and Equinox.

Kassadin use Zonyas. At the end of Zonyas effect Soraka use Equinox (e) which have silence enemies in area effect for 1.5 seconds. Kassadin riftwalks away from the area during when he should been silenced and unable to use abilites.

Could it that the silence effect is not instant after Kassadin exit Zonyas? During the riftwalk you can see that he has the silence effect on him. Sorakas silence is usually instant which makes this interaction seem unintened.