Temperatures and resistances / immunities

[HumbleGamer]

Here's the Temperature rules:
https://2e.aonprd.com/Rules.aspx?ID=642

How do the 2 features interact with each other?

For example, a wintertouched human will gain cold resistance equal to half its level ( or 5 + half its level by lvl 13 with the appropriate ancestry feat ).

Apart from Incredible Heat or Incredible cold, what you might suffer from is a minor environmental damage ( 1d6-2d6 )

Assuming that the maximum possible outcome is 12, a creature with 12 resistance wouldn't be suffering from any damage in that environment, which leaves me just 1 doubt: What about the fatigue stuff?

Not being able to suffer any cold/heat damage would mean that you are at ease in that environment, wouldn't it right?

[Gary Bush]

Creatures are still impacted by the environment so still need to make saves against it. This could result in certain conditions being applied.

Damage is separate so a character would not take damage.