I played a game recently where I was first player during a turn.
I had the Wall out and I had Veteran Builder out.
Each [Night's Watch] character you control gets +1 STR.
Forced Reaction: After you lose an unopposed challenge, kneel The Wall
Interrupt: When the challenges phase ends, kneel The Wall to gain 2 power for your faction.
No attachments except Weapon.
Action: Sacrifice Veteran Builder to choose and stand a location.
After I was done with my challenges, I passed to my opponent. He won an unopposed challenge, kneeling the Wall.
Then, he initiated another challenge.
He still had one challenge remaining that he could have conceivably done.
But he was not going to win it with the characters I had standing, so he proclaimed that he was done with challenges.
I used Veteran builder's action to stand the Wall and gain the two power from the Wall.
I was later told that once the active player said he was "done", it should have gone straight into dominance and there was not an action window in which I could have used the action to stand the Wall prior to the end of the challenges phase.
I checked the RRG and there is, indeed, not an action window between the final challenge and the end of the challenges phase. However, I have a few questions that, I believe, weren't all that clear to me.
1. Is there an action window between challenges? The RRG makes it very obvious that, there is an action window after 4.1, but prior to 4.2. But after the challenge resolves at 4.2.6, it is kind of ambiguous what happens next. In 4.3, it says "if the active player does not initiate further challenges, the next player in player order becomes active player, proceed to "Action Window." If all players have been active player, proceed to 4.4"
So, does that mean that after a challenge, the active player may immediately proceed to the end of the challenges phase, without an action window opening again?
Or does it go back to 4.2, where there is an action window and then, after the action window, the active player can proclaim that he is done with challenges?
If this is the case, and the active player can just end the challenges phase without actually allowing a new action window to open post challenge, the Veteran builder becomes considerably worse, because the active player, as long as he is second player, can save his unopposed challenge for last, and then immediately go to dominance before the Night's Watch player has a chance to stand his Wall back up.
2. If it does, indeed, return to 4.2, as I genuinely hope it does, it is an error of the active player to declare that he is not going to declare any additional challenges prior to allowing me to use any actions, yes? He is not allowed to skip the action window just because he is not going to declare any additional challenges, I imagine...