Ponce BA, et al. - Via conducting a population-based, retrospective, cohort study, researchers evaluated the efficiency and safety of overlapping surgery (OS) at a training institution by comparing it with nonoverlapping surgery (NO) with respect to operative time, mortality, readmissions, and complications. They selected patients who had undergone surgery by attending surgeons who performed ≥10% of their cases overlapping. The criteria for analysis for surgical time were fulfilled by a total of 26,260 cases and for outcomes by 15,106 cases. OS patients had an average case length of 2.18 hours vs 1.64 hours among NO patients, a decreased risk of mortality, a decreased risk of readmission, and a decreased risk of experiencing any patient safety indicator. This study addresses gaps in the literature regarding OS, such as the effect of resident involvement and the individual effect of OS in 13 different surgical specialties, highlighting the necessity for additional investigation and suggesting that the practice of OS does not expose patients to increased risk of negative outcomes.