Converse between languages and avoid misunderstandings
Find a way of speaking that is comfortable for both of you.
Agree on the language
Ask what language the other person prefers to converse in. Don't assume that speaking Spanish, Portuguese, or English indicates a particular level of fluency. You can use simple sentences and check if an expression is understood. Changing languages by agreement can facilitate the conversation, but it should not become a requirement.
Check the meaning
Humor, regional expressions, and machine translations can change the tone of a message. If something seems confusing, ask what the other person meant before jumping to conclusions. To talk about plans or limits, use clear language and summarize what was agreed upon. Do not interpret a linguistic difficulty as consent.
Respect the rhythm
Allow time to read and respond. Don't ridicule mistakes or use language proficiency to pressure them. It is valid to say that a conversation needs a pause or a different explanation. Learning new words can be enjoyable when both parties want it and no one has to act as a teacher out of obligation.