F5 Service Engineer interview questions

Submitted my resume online and I was called for an interview in about a week or so. Initial interview was with the hiring manager and I thought that went well so he sent me up to the technical interview. I don't know if it's dumb luck or not but I interviewed with the same Engineer twice for a similar role. Naturally I waited for feedback on the 2nd attempt, as I felt it went much better than the first, as I was caught off guard with the questions that were asked. I called, emailed to get some feedback and got nothing from either person that I spoke with and I'm not sure what to make of that. If you're not interested, at least send me a courtesy email stating that.