Is it normal to do Vaser followed by Bodytite during the same procedure? Is there anything wrong with doing it that way?

I'm a 33yo male undergoing a lipo procedure in 2 days on my upper and lower abs and love handles. I'm 6ft 2in and 250lbs. Muscular. Not too much fat, but dont have the best skin elasticity and just can't seem to burn through the fat over my abs no matter how many crunches I do. My Dr said he is first doing Vaser followed by BT thereafter for skin tightening. But I thought that was a bit peculiar since I thought BT already had a canula attached according to the videos Iv'e seen of the procedure.