The answer from Pat Ludwig is correct, this is just additional clarifications of the rules regarding the tracking of actions:
Donald X writes:
If you TR or KC a duration card, leave out the TR or KC with the duration card. [It's tracking that you doubled or tripled that card]
If you TR or KC a TR-or-KC used on a single duration card (and up to 2 non-duration cards), don't leave it out. [It's not tracking anything.] [You still leave out the one that hit the duration card though.]
If you TR or KC a TR-or-KC used on two or three duration cards, leave it out. [It's tracking the extra doubling/tripling done by the latter TR or KC, which also stays out.]
Therefore I am going to go back on my ruling from yesterday for what happens if you KC a KC a KC used on 3 duration cards. The 3rd KC stays out obv. The 2nd one stays out; it's indicating that the 3rd one hits 3 things. The first KC is doing nothing and so goes.
If instead you KC a KC, and that one KC's 1) a KC for 3 duration cards, 2) a duration card, 3) a non-duration, then you would keep the first KC out, as now it's indicating that the 2nd KC got to hit 3 cards, necessary for that 4th duration card to be tripled.
Slightly complicated, but the whole thread leading up to this can be found here at BoardGameGeek.com. TR = Throne Room, KC = King´s Court.
