Oh yeah, it’s definitely an easier said than done thing. But unless you do that, you’re sort of forced to cut it down a lot (like how you have it). Because even if you cut Kylo’s dialogue in the main audio channel, you still hear the echoes of that dialogue in the other channels, as I mentioned earlier.
Anyway, it might be something that I can play with. Maybe in the meantime we could collect some foley that could be used for that scene? Like saber sounds for Rey and Kylo’s sabers, the stuff they break during their fight, and then maybe see if we can isolate any other unique sounds that are in that scene.