I don't think he 'does' or 'looks for' anything in those three weeks.
He's like the Taoist monk who wandered into a village suffering through months of drought.
The people begged his help to bring them rain. He asked to be led to a small hut and to be left alone.
Three days later he came out, and with that the clouds opened up and it started to rain.
The villagers were estactic and so grateful: 'What did you do? What can we give you in thanks'? they asked.
And he said:
'I don't need anything, because I didn't *do* anything. The village was so out of the Tao that it took those three days of sitting in silence simply to bring myself back to It, back in the Tao -- and when I did, the life giving rains naturally returned'.
Not the right answer I'm sure, and certainly not the expert one -- but that's what I like to think is going on. There's a routing there, latent in the order of things -- and if Bill C can be quiet & alone enough it will present itself, as naturally as the rain.