Why does Radahn disappear during The Shattering? | Elden Ring: Dark Moon BTS

In my mod for Elden Ring, Dark Moon, there's an encounter involving you, Malenia, and Radahn named The Shattering. In it, Radahn jumps away and never comes back. Why does this happen and how does it work?
This is the first of a series of videos I will be producing exclusively for Patrons of the ERDM Patreon: / erdm
links:
erdm: www.nexusmods....
twitter: / auramalexander

[@jallybwan3767]

Great vid! You did a great job explaining stuff in layman's terms. :)

[@kemalprasadha2028]

Why all armor stat at 6 point? When I change nothing happens?

[@semorebutts2584]

I was wondering who the fuck this was. But I remember you, you were the comic guy.