This makes me think of my mate Keith Codes $10 of attention, for those unfamiliar it is aling the lines of...
You have $10 of attention to spend, go overdrawn and your beyond your limits.
Everything costs you something, a novice riding for the first time may spend $9 just trying to use the clutch to pull away, or $3 to change gear.
Valentino Rossi only has $10 as well, but a gear change may only cost him 1 cent of attention, whereas perhaps it costs me 20 cents.
The art is to get the costs down, if using the clutch, gears etc is csoting you a few cents you have over $9 left for actually riding the motorcycle.
If you exceed you $10 you have to cut something out of the budget, typically riding too fast can do this, the vehicle control aspect is using all your attention and the first thing to go (IMO) is probably good forward observation and planning.
And then you get into the 5 P's
It's very similay to the old way of "unconciously incompetent... consciously incompetent... consciously competent... unconsciously competent" stuff. Experience give you the last one and then you do the mechanics of riding without thinking so much and concentrate on what is going on with all the other stuff.............
That's the time when it get so much easier as you see all the other shit rather than using 50% on the bike.
The trouble is with some of these "advanced rides" is there is no heart rate monitor to see if the bloke in front is hyped up or not as if he is that is not too good will probably lead to a feck up somewhere along the line.
Relaxed grip, relaxed head and relaxed body and all that.