Had a call with the recruiter who provided useful insights of the company, the expectation of the role and everything for me to accept to continue the process. This person strongly suggested that I did leetcode exercises as the next step would require me to solve this sort of questions. During the second call the interviewer gave me an exercise related to architecture, nothing related to the recruiter's advice. I honestly don't know if this was on purpose or just a mistake but asume they might not even be sure of the questions up ahead.