I've really enjoyed these videos, so thank you! If I might make one suggestion, in addition to (or instead of) the wireless lavalier microphones that the guests wear, could you also set up some microphones on tables in front of the guests? That way, in post, your video editor could choose whether they want to use the lavalier microphone audio or the microphone on the desk audio. Ms. Lee's microphone is picking up a lot of rustling from her hair touching the microphone and it makes the audio hard to listen to. Microphones on a table in front of your guests would have avoided this problem. A wireless lavalier mic makes sense if your guest is lecturing and walking around, but for two seated guests microphones on tables would probably be better or at least a good addition to your setup.