The rapid digitalization of industries requires the integration of digital technologies into engineering education to ensure future engineers are formed with interdisciplinary skills. This shift is crucial for maintaining industry competitiveness and overcoming challenges in adapting to digitalization. Digital twins (DT) and extended reality (XR) technologies, including augmented reality, virtual reality, and mixed reality, are pivotal components of Industry 4.0. While DT enables the representation of virtual counterparts of physical systems, XR enriches user experiences by overlaying digital information onto reality. However, there is a lack of studies exploring the combined implications of these technologies. This paper aims to fill this gap by systematically reviewing the convergence of DT and XR in the academic domain.