Hm, that’s an interesting idea. You’d need to modify the dialogue a bit to make it work, I think. So it could go something like:
KOR: We found the source of the intelligence leak and dealt with him.
Kylo: Very good, Captain.
[In the conference room]
Kylo: We had a spy in our midst, who sent a message to the Resistance. They are of no concern. With what I’ve seen…
It could work, although I’m worried that the order of information feels a bit weird (The Knights are with Kylo right before this during the helmet forging scene > they decide to wait to give their status report to Kylo until he’s storming down the hall > Kylo proudly displays Mark Hamill’s head - whom the audience already knows was dealt with, so the head is only for the council’s benefit - just to never remark on it again.
Keep in mind also that the hallway scene is the first time we’ve established to the audience that these are the “Knights of Ren,” so making it more about wordy exposition than about the dramatic weight of the introduction might hurt the pacing/tone of the scene.
Perhaps you could elaborate more on what is making the conference scene confusing?