It's relatively simple...
Out of the top of the reservoir - through the GPU, into the CPU block.
Then out of the CPU block in 2 directions, 1 to the rad, the other to the motherboard block.
Then one through the rad and out the other end, and the other tube from the motherboard block stops at the t-junction where it meets the flow coming out of the rad - and so follows the route through the T and back to the pump.
simple! haha
which id what stumped me also does that not mean that at any one point only one loop worth is gettin cooled via radI thought it was a drain line. I believe that coil has to be in a flowing line to be effective, for the proper exchange of ions.
The CPU is running at about 2 degrees C above ambient, super pleased.