Any Delta Reservation Agents?

Hi. I actually resigned from Southwest about 2 months ago to go to lawschool. Due to some issues, it may be a good year before I get to start school. I had convinced myself that I wanted out of the airline industry, but I guess it's in my blood.
Delta had a job posting for immediate openings for Reservation Agents about a week ago. I e-mailed my resume. Now I see the posting is gone. I'm assuming they got the desired amount of resumes and will go through them. Any feedback on how long their screening/hiring process is, and any feedback on what it's like to work for Delta, advancement opportunities, etc.. is greatly appreciated. I'm dreading the question of "Why did you leave Southwest". However, I always wanted to work for a big international airline.

Have you heard anything yet? I applied for the position as well...I am currently a contract employee for Delta at HOU and had to apply externally...I was interviewed on 8jul and offered the position on 12jul...I was told for the DFW location they had 180 applicants and 50 open positions, it has been posted on delta.com and internally again....I will find out Monday which class I will be in.