Looking for missing ard video

[Shadow]

Hi im new here so im not sure if this is the right place to ask this but in this ard video at 7:15 he mentions a tutorial for level making without an editor he made but i looked and it doesnt seem to exist was this video deleted or is it just unlisted somewhere, Thanks in advance.

7:15 in this video https://youtu.be/RDfVmRAkOAk

[Lama LED]

I remember finding the link to that "level making without an editor " video in the description of one of his videos somehow but the video was in private now