I'd definitely try working out how to use the black sequencer properly 1st...
you can do a lot in terms of clock division and turning gates on and off per channel - so a single clock source into the black sequencer - or using the internal clock - doesn't mean you are playing all 4 channels at the same speed - they will be at related speeds - and euclidean rhythms won't work - very well - but you have another sequencer anyway... it's nice to bounce a euclidean sequence of a non-euclidean one
matrix mixer: difficult to tell as there are a lot of black patch cables - but I suspect he's taking the 2 sequencers which are running at different speeds and mixing them together in different proportions - before sending to vcos, probably via quantizers
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities