In this episode of Bell Curve, we are joined by Quintus Kilbourn and Barnabé Monnot to discuss order flow auctions, proposer-builder separation (PBS) and the future of MEV. We start with a deep discussion on order flow auctions, application vs protocol layer designs and the implementation tradeoffs. Quintus and Barnabé then explain the risks of vertical integration and how we can build systems to mitigate these supply chain centralization points. We end with a discussion on enshrined PBS, off-chain infrastructure and the future of MEV.