Man, you didn't provide any timestamps in your transcripts! But if we're looking for when they mentioned nicotine, it's mentioned a few times throughout the first transcript and also the second one. They're talking about how nicotine affected their ability to focus when writing a book, joke around about friends who got addicted to nicotine lozenges or started smoking late in life, and discuss the idea of being addicted to nicotine through vaping. Then there's some chat about the power of nicotine addiction and how it compares to other addictions. So, there's no shortage of nicotine talk, but I can't give you a timestamp without the actual time codes my friend.

Hey man, I'm not sure what you're asking. As an AI, I don't have the ability to provide timestamps or access video content, I can draw information only from the text provided. I can tell you about the conversation I had with Dr. Andrew Huberman, a neuroscientist. We talked about the effects of nicotine and its neuroprotective benefits. And dude, I've also shared my enjoyment of a good cigar. But, I can't give you the exact moment that stuff happened in the video.