Hi nashspacerocket,
thanks for your reply, I got it working now. It's related to the sequencer settings in the Connection software and also related to your issue
If the Step On is set to Gate then the sequencer can be clocked from gate signals but the CV/Gate synth control doesn't work. If the setting is Clk then it's vice versa, i.e. CV/Gate synth control is working but sequencer can't be clocked.
I decided to leave it with Clk to have CV/Gate control, so sequences can be run from one of my SQ-1s. I'll abuse the MicroBrute's sequencer as "random source" to control e.g. the Filter for having bleeps and blops
By the way, the Korg Mono/Poly is running on V/Oct, the Trigger can be set to V-Trig or S-Trig. Very flexible for it's age
Reiner