Well done, JP. You got it. Here are the explanations...
1. Couched, to begin with... Sisko tells Kira the interpretation was couched in metaphors to begin with.
2. Open it up... The comet fragments leaked just enough so that a filament left the wormhole open for signals to be transmitted on both sides.
3. We never hear the end of it... The episode ends with the Vedek starting to tell Sisko about another prophecy, but we never heard the whole thing.
4. Strangely accurate... The prophecy came true very much as stated.
5. The beginning might have led to the end... The incomplete prophecy Yarka says has the Emissary go through a fiery trial, which could be a hint of his fate in the series finale.
6. Mixed up... The two Rules of Acquisition are mixed up by Dax.
Thank you for making sure my brain didn't fry trying to come up with 20 more clues.
Your turn.