Yes I have to say there are more than one range!
Ranges I adhere too!
1.Kicking
2.Punching
3.Knees
4.Elbow
When doing stand up Im mindful of what range im at. So i can imploy what techniques work best at that range. if your too close to punch you need to throw elbows and knees. if your too close to kick effectively then you need to adapt to what range your in.
But as for contact range. I would say anything outside of kicking range is non-contact range. From that range you can feint as you bridge the gap. But once the gap is bridge an you have contact. You have to realize you cant normally throw a side kick from chi sau range with out loosing some contact. chi sau range is stand up grappline range in my opinion. With in chi sau range you can kick, punch and knee and elbow. Because there are different ranges with in chi sau too. But you can can kick outside of chi sau range as well as punch.
The Flow is relentless like a raging ocean with crashing waves devasting anything in its path.
"Kick Like Thunder, Strike Like Lighting, Fist Hard as Stones."
"Wing Chun flows around overwhelming force and finds openings with its constant flow of forward energy."
"Always Attack, Be Aggressive always Attack first, Be Relentless. Continue with out ceasing. Flow Like Water, Move like the wind, Attack Like Fire. Consume and overwhelm your Adversary until he is No More"