In my games, I count skill challenges as an encounter, but only for the party members that participate. So, if a party member opts out of a challenge, they are effectively giving up half an action point. I make this clear to my players as a way of rewarding full participation in skill challenges.
In theory the same is true of combats, but my players never opt out of fights.
But skill challenges (not tied to a trap or inside a combat) don't get to expand has many ressources as a combat encounter, ergo the benefit of winning the challenge can't be as rewarding, no?
That's true if the skill challenge is about the same level as the PCs (-1 level to +3 level). But if it's not:They might not be worth as many XP, or result in treasure, for example (depending on how the DM has designed the encounters). But they are still a non-combat encounter, which means they are an encounter, which means they count towards the "two encounters without an extended rest" requirement of a milestone.
-Hyp.
DMG p 123 said:You’re well within your rights to tell the players that an encounter doesn’t count toward a milestone. An encounter that’s two or more levels lower than the characters is really easy, and it shouldn’t contribute toward a milestone.
The Living Forgotten Realms guidelines are: If they earn experience from it then it counts for the purpose of Milestones.The PHB says : every two encounter, you reach a milestone.
So the question is : does skill challenge normally count toward a milestone ?
Of course if a skill challenge is so easy as to not be worth a milestone, the DM should probably be asking himself why he's bothering to play it out as a challenge in the first place. Just allow the PCs to roleplay/narrate their way to success and move on.