Need some help understanding the collision setup

[lilianspeaking]

Hi devs:), I'm trying to understand the collision setup in the readme file. I'm very new to this dual system so sorry if this is very obvious.

Specifically, I have trouble understanding the recommend setup here:

it is recommended to use 2 separate spritesheets: one for displaying the tiles ("display tiles") one for program logic ("world tiles")

In practice, does this mean two atlases or two nodes?
For now I used one TileMapDual node with the old fashioned collision drew in my physics layer. it also worked. But want to learn how to use this correctly.

And if I am understanding it right, the video under collision is not the correct one.

Really appreciate this plugin, thank you!