In a deep conversation, Rachel Wolfson interviewed Jeff, the founder of Merlin $Chain, discussing the future of Bitcoin Layer2 and DeFi innovation. The interview focused on how Layer2 technology can bring more functionality and flexibility to Bitcoin, as well as the latest developments and innovations in the DeFi sector. Jeff emphasized Merlin $Chain's vision to make Bitcoin more interesting and practical, and how they aim to achieve this goal through DeFi solutions.