the other link has a little, it's kinda just something i've seen around in different places when I was super curious about his music and how you'd produce stuff like that, specific ones I can find right now are in random threads[1] and in a red bull music interview he talks about it a tiny bit[2]
[1] https://llllllll.co/t/ppooll-max-msp-networking-system/28352
[2] https://www.redbullmusicacademy.com/lectures/tim-hecker-lect... (ctrl f for "P-P-O-O-L-L")