Often industry expects university graduates to hit the ground running. One way to deal with this expectation is to offer our graduates opportunities to collaborate with the industry - a collaboration to acquire theoretical skills and acumen in engineering practices and how a business works. Challenge-based learning environments intimated by the CDIO principles, which focus on real-life experiences, external stakeholder involvement, complex problem solving, and a focus explicitly on knowledge application, offer a rich environment that may allow the needed preparation. One of the proposed outcomes for students is the improved acquisition of professional capabilities. However, it is not established yet, whether these professional skills are acquired or strengthened in CBE settings. Professional capabilities focus on four levels; knowing oneself, critically thinking about the problem, collaborating, and having contextual and ethical awareness. In this study, we surveyed if students perceive improvement in applying professional skills. We particularly questioned professional skills enabling behaviors based on validated questionnaires of EPFL and Univ. Sydney. Additionally, we have gathered and analysed the peer feedback within teams on personal leadership. Contrary to the expectations, leadership skills and professional capabilities are unrelated.