【求解状语从句】（C）he was the man I didn't want to see,I did all in

【求解状语从句】（C）he was the man I didn't want to see,I did all in my power to help him.
A as C while 为什么不用as呢 两个都可以表示尽管 而且此时 while只用于同级事物
二者不是都可以表尽管么