Letting the mind wander if you're aiming for developing activation skills won't do it.

The thought "Does this information go into my subconscious despite these 'intruding' thoughts?" is one of those blockers. (protection mechanisms) That you wind up having to work through when it comes to activation.

I don't even bother thanking those thoughts I just let them go and move back to the chant. If you want to stop the mind from wandering and wondering. Turn your chant into purpose question. I want to know if the author has anything useful for me.

Alex