[muzuq]

I wouldn't "red flag" a dodged answer, but "yellow flag" it.

One of the most useful tactics in interviewing, or in any conversation, is to use silence as a tool. In your example, if they say "Deep learning", instead of responding with "that's interesting,..." stay silent for a few momenths. They will subconsciously jump to fill the gap in conversation, often revealing even more about themselves with the "unprepared" response you promted with your silence.

Another tact to take is being more "strong-armed". If they "dont want to bore you with the details", simply say "I would like to hear the details, break it down for me".

Simply don't allow them to deflect. If they deflect and haven't answered your question to your satisfaction, be straight forward and ask them to elaborate.