Yes, I made a sequencer that could be chained, but it was the result of making a RAM module. I later added pointers so that you could both read and write to the ram. For example, you could take the trigger from the end of the sequence and then randomly re write one or more values. In other words, make a Turing Machine with just two blocks. You could even allocate memory if you really wanted to do that. So then one system would use one chunk of RAM, while a second system could use a separate part of the connected RAM. However, it is just faster to use another unconnected chunk of RAM. If anyone else also made a sequencer that could be chained together in the blocks format, I would love to see it.