This paper presents a comprehensive literature review on experimental push-off investigations of notched connections in Timber-Concrete Composite deck structures. The study has established a novel database with 413 specimens from 25 different push-off series, and includes a detailed examination of the applied push-off test setups. The results from the database are used to investigate the five known failure modes and evaluate quantitative and qualitative findings, such as influence of fasteners and material strengths, across the experimental series. This review aims to contribute to a better understanding of the notched connection and can ultimately allow for improved experimental understanding and design approaches.