Not the most melodic sequence but as you can see the filmed seq8 is defining the gate length show in the METER screen of each note being played whereas the other seq8 set the pitch of each step.
How do you patch this? The gate signal is generated via a triggered envelope with a 0 attack and its Delay set by the cv raw of the SEQ8. this envelope has its signal sent into a comparator on the 4COMP with has its reference signal set to 0, thus causing the comparator to send out a gate signal as long as the voltage sent out by the triggered envelope is higher than 0. The generated gate signal is patched into a second ENV which controls the VCA of the voltage thus having notes with different lengths.
The diy section contains a tutorial on how to build your own comparator.