Siemens Energy interview questions

Second interview Poor Questions were easy but really irrelevant... They wanted to employ a Technical Project Manager in I&C and Electrical domain. In the interview an expert asked me some irrelevant questions: 1) they showed me a P&ID diagram of lubrication system( if I remember correctly) on a poor quality screen and asked me about some mechanical components! Why shall I know component on your oil system? What is important here? Understanding the main Idea & concept of lubrication system or being familiar with your especial components ? Then what is the role of your claimed on job training there ? 2) they asked me about their own especial process of design and implementation and test! They don't understand that when an engineer have not had a direct cooperation with Siemens yet, how he could know about Siemens especial process of design? 3) according to their process, the first year was on job training. If I shall know everything of your especial system, then one year training w Turns useless, or they only wanted to have someone from their interns and this interview was just a formal process of employment to have some candidates from extern