I do not have a BFA. I really think it depends on the school's philosophy.
The most informative article I have read on the topic is this one:
http://www.artschools.com/articles/admission/best/
What I took away from it, was that the single most important
factor in a school's decision is the portfolio the student presents to them.
Since most schools ask that your portfolio contain only works within the calender year,
it probably allows them to evaluate the level of craftsmanship (proficiency determined by work/time)...
Furthermore, as a 'non-traditional' student, your life experiences (and 20 years of work)
will be strongly considered. A friend of mine, a 'non-traditional' student, with a long gap
in between academic programs was accepted to a top 5 MFA program. And no interview was
required.
So sure, it does happen! Good luck!!!