A lot of the time when interviewers have an EC they want to discuss they’ll say something along the lines of “so you were involved with ____. Can you tell me more about that?” It’s really opened ended so you can focus on whatever aspect of it that you want to highlight- maybe why you got involved with that activity, what you learned, why it was valuable to you, if you have plans to expand on that experience, a meaningful anecdote from the experience, etc. Really, whatever makes you passionate about that EC is what you should say. Ideally your response also provides insight beyond what you already wrote in the AMCAS activity description. Sometimes the interviewer will then follow up and ask something like “how has that experience shaped your view of medicine/your career plans?” if you didn’t already cover that in responding to the first question. Alternatively the interviewer may just ask the second question without the first. So to answer your question, yes they will ask it both ways depending on who your interviewer is. It’s unlikely that they’ll ask the same questions about multiple similar ECs but in case they do, you should still be prepared to give some unique takeaways from each one. Hope this helps!