That’s interesting. There’s a few shots that can be used in different ways. I always liked cutting from the door closing to the Kylo eyes closeup, and felt that the twitching shot (in this new context) felt like he was being disturbed/confused, unsure if he was hearing voices in the radio. He could be questioning his sanity. I also added some low level Sith whispers (good things come in threes!) to reinforce the idea that there’s more going on than the radio. I’m wondering if I should even make them a bit more prominent in the mix.
I could buy the shift from the door moment to calculating rather than hurt (it’s hard for me not to read that emotion in his eyes in that shot), but you would definitely need to provide a little extra oomph right as he twitches later. Either a word from Palpatine, or a burst of static, something to elicit a specific reaction like the boom of the door did originally. It’s a pity we don’t have clean audio of Palpatine saying “Kylo”, do we? That might do the trick.