i don't know if the PD for the categorical program is at all involved with the med/peds program, but I know that the categ PD clearly stated on the interview day that there would be sending out of emails, etc. However, I have since learned, that they have broken that and have contacted people post-interview
I have not heard anything from UNC recently. Did get email from the PD day after interview thanking me, etc. Also a letter from him about 1 week after interview... got the impression they like me, but a bit unclear.
Hope this helps... didn't apply to Baylor, but maybe should have! Heard it's a great program.