If someone BIT off a piece of chicken (didn’t chew) and spit it out. Does he have to wait 6 hours.
There are two reasons why we wait 6 hours after eating meat. Since meat has a strong after taste, which stays on the palate and in the throat, and secondly because the meat gets stuck between one’s teeth when chewing it. Biting down on something, when done with one’s teeth, will cause the meat to get stuck in between them. It doesn’t matter how many times the person bites down. Therefore he has to wait six hours.
Rambam Hilchos Ma’acholos Asuros 9-28, Y;d 89-1 Taz ibid 1.