If they have the time, and are willing to talk to you then why not? I agree with the person above, it doesn't hurt to talk to them, but I doubt it will help much. The post-baccs over here admit people in a similar fashion as med school admissions (e.g., an admissions committee). So knowing one person, regardless of their rank has limited value in the grand scheme of things.
I talked to our director of admissions who also serves as the post-bacc director. He was very helpful and provided me with alternative routes since I wouldn't qualify for our post-bacc program (not socio- or economically challenged..blah blah). But he was helpful nonetheless. He actually also serves on the med school admissions committee, but there's just so many of them that it doesn't really mean much to me other than that his information is straight from the horses mouth
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