why does OP's interviewing skill have to do with anything? i actually agree that stilted non-conversational speech like that in interviews and speeches sounds bad (talking in particular about the beginning). no need to say all that live if it's not contingent on the interviewee in any way. just watch the video: he is sitting there staring at a piece of paper reading, and then the first question the interviewer asks is essentially "what are some of the foundational inspirational ideas of your work?", which for anyone who isn't brilliant and hyperrational like the interviewee would be difficult to answer after being warmed up for an hour, much less before even seeing the eyes of the interlocutor. yes, interviews are not the same thing as normal conversation, but i don't think it's that crazy to suggest (like OP) that priming people in a more conversational way can be a nice way to smooth the edges around a conversation that will already be difficult for everyone to grasp (including Bach, who has to articulate all these things).

all of this is independent of how good of work lex does as an interviewer, which seems like it's pretty good given his ability to engage with the ideas presented (in this context idea empathy (ie understanding what Bach's saying) > interpersonal/conversational empathy).