Power relations in care are the link between patients and nurses regarding communication and the ability to act in this context. It can be affected when there is cultural interference between members, putting mutual understanding at risk in healthcare situations. This study analyses power relations in healthcare situations between older Norwegian patients and Spanish migrant nurses regarding active listening, shared decision-making, and patient participation. We performed a hermeneutical study endorsed in critical discourse studies framework from a transcultural perspective. A purposive sampling included older Norwegian patients living alone and Spanish migrant nurses working in Norway. Eleven face-to-face semi-structured interviews were conducted with older patients and four via videoconference with migrant nurses. The analysis followed hermeneutic considerations by Crist and Tanner, and linguistic analysis was performed. Shared decision-making and active listening situations sometimes showed a power imbalance that negatively influenced older Norwegian patients. However, Spanish migrant nurses were also conditioned by care organising institutions. This power triangle negatively affected the relationship between the older patients and migrant nurses, resulting in a lack of communication, personnel, time and trust. The migratory experience influenced the care provided by Spanish migrant nurses, shaping a series of cultural competencies acquired through the migratory process.