Disclosures Dr Badertscher has received research funding from the University of Basel, Stiftung für Herzschrittmacher und Elektrophysiologie, Freiwillige Akademische Gesellschaft Basel, Swiss Heart Foundation, and Johnson & Johnson and has received personal fees from BMS, Boston Scientific, and Abbott, all outside the submitted work. Dr Krisai has received speaker fees from BMS/Pfizer and grants from the Swiss National Science Foundation, Swiss Heart Foundation, Foundation for Cardiovascular Research Basel, and Machaon Foundation. Dr Knecht has received funding from Stiftung für Herzschrittmacher und Elektrophysiologie. Dr Mahfoud is supported by Deutsche Gesellschaft für Kardiologie (DGK), Deutsche Forschungsgemeinschaft (SFB TRR219, Project-ID 322900939), and Deutsche Herzstiftung, and, until May 2024, has received speaker honoraria/consulting fees from Ablative Solutions, Amgen, Astra-Zeneca, Bayer, Boehringer Ingelheim, Inari, Medtronic, Merck, ReCor Medical, Servier, and Terumo, all outside the submitted work. Dr Sticherling is a member of Medtronic Advisory Board Europe and Boston Scientitic Advisory Board Europe; has received educational grants from Biosense Webster and Biotronik; a research grant from the European Union’s FP7 program and Biosense Webster; and lecture and consulting fees from Abbott, Medtronic, Biosense-Webster, Boston Scientific, Microport, and Biotronik, all outside the submitted work. Dr Kühne has received grants from the Swiss National Science Foundation (grant numbers 33CS30_148474, 33CS30_177520, 32473B_176178, 32003B_197524), the Swiss Heart Foundation, the Foundation for Cardiovascular Research Basel, and the University of Basel; grants from Bayer, Pfizer, Boston Scientific, BMS, Biotronik, and grants and personal fees from Daiichi Sankyo, all outside the submitted work. The other authors have no conflicts of interest to disclose.