My last understanding is ... It isn't for chasing no thought If one takes a steel rod and hit someone over the head, thoughts stop But, the person would not have become enlightened. There is more than one aspect to this practice
this is the ordering.Zazen brings reality and reality brings Following white method.
Moreover, you can find both in Zazen posture. Zazen is the posture of sitting Reality is the (hands shape) Cosmic mudra while in sitting And Following White Method symbolizes the thoughts passing in your head during zazen.