This is the way it happened for me.
Back in June, I was notified by HR that I was chosen to interview if I was still interested in a position with the FAA and that I would have to go the Traditional Route because the PEPC was full. I accepted. About two weeks later, I was called for an interview and went to the Center here in Memphis for my interview. A couple of weeks passed by, and I was notified that my interview went well and I was on to the next level. I received my TOL and a bunch of paperwork to fill out. I filled it all out and faxed it, then was invited to the Atlanta PEPC in August.
I didn't go through the rest of the traditional process because I went to the PEPC. But according to the paperwork I received when I originally started the traditional process, you have a certain amount of time to schedule appointments to get your medical, etc. done. A friend of mine did the Traditional at the same time as me, and he was done with everything by the time I made it to the PEPC in August.
Billy