Background Assessment shapes learning and influences the development of clinical reasoning. While the predominant practical assessment used in the UK is Objective Structured Clinical Examinations (OSCEs), many Australian medical schools continue to incorporate the long case, in which learners assess real patients and synthesise clinical findings, formulating differential diagnoses and management plans. These contrasting approaches create distinct opportunities for feedback, mentorship, and learner development. Perspective As a UK-trained resident doctor now working and delivering long case teaching to students in Australia, I have first-hand experience of the contrasting approaches to assessment and clinical learning. Teaching long cases has highlighted the educational value of authentic patient interactions, where learners receive mentorship and feedback on clinical reasoning, managing diagnostic uncertainty, and holistic patient assessments. Conversely, my undergraduate experience in the UK emphasised structured assessment with focused feedback on discrete clinical competencies. Discussion This perspective explores how differing assessment models influence how learners receive feedback, engage with mentors, and develop clinical reasoning. Drawing on experiences across two healthcare systems, this presentation considers how integrating these complementary approaches can encourage reflective practice, and prepare graduates for the complexities and uncertainties of real-world clinical care. Conclusion Cross-cultural educational experiences can provide valuable insights into assessment design and clinical teaching. Reflecting on teaching across two medical education systems suggests that combining the standardisation of structured assessments with the authenticity of long-case encounters may support the development of competent, reflective clinicians. This perspective invites educators to consider assessment as an opportunity for mentorship and growth.