When I applied a few months ago, the Smartlynx interview was done by the school directly. However it might have changed now, as the process wasn't really settled at the time. Smartlynx believe they don't have enough hindsight, yet, to judge ab-initio candidate in an interview, and they'd rather have it done by the school, and then pick the candidates themselves based on the report of BAA. Again, this might not be the case anymore.