After a brief overview about the company and some information about myself, started the technical interview. The interviewer prepared a presentation with an integration schema involving: cloud tech, scada, plc, virtualization, iot, database, platform, etc. He started asking questions about any component drawed in this schema and he asked detailed information about the relationship between the components. From my point of view this type of interview doesn't make sense because it's impossible during an interview design or discuss a so complex architecture. This is a trap not an interview, hoping that the candidate fails.