I haven't read the whole thread, but I was playing some TFC today and some guy accused me of chasing because he was heading toward the flag room, I saw him, and I was a medic, so I ran after him and killed him.
To me it seems like defending = chasing.
But you can't say "Don't defend, fag!".
Anyways, the whole concept of chasing is completely queer IMO.
Do whatever you fucken want.