T-Systems Angular Developer interview questions

I was called for an interview for Angular Developer. The interviewer seemed nice at the beginning, and they started by asking basic questions about common Angular features, such as RxJS methods, component lifecycle, logic blocks... however, they seemed to never be satisfied with getting correct answers, and they ended up digging further and further to ended up throwing the typical interview-memorized pure-JS questions that honestly are irrelevant to what's useful as an Angular dev. The complexity of the interview did certainly not match the offered salary range.