Let me be the first to say that AIkido is not about fighting and the goal would be to avoid the confrontation. That being said the connection is what it is about and any technique should work. Not saying that I can do them in a defense situation. I heard somewhere, " Aikido is 95% atemi". That statement was attributed to O'Sensei.
On a better note, use your Aikido to stay out of a fighting situation.