Do Portuguese people understand Spanish?
Although Portuguese and Spanish both belong to the Romance language family, they have significant differences. Although the Portuguese can understand some Spanish, they still need to learn it if they want to communicate fluently. You may be able to understand everyday language, but professional terminology and grammatical details may cause misunderstandings. Therefore, it is not accurate to conclude that Portuguese people must understand Spanish based on language background alone. It is recommended that actual communication be used to more accurately assess the level of understanding.