The signal is getting splitt mid/side and dry wet and get different treatment, this is all you need for big leads.

Note or audio sidechain for semi-random fluttering.

Its audio sidechained so only wet when its silence or with the tail, perfect for drops and stuff you want to put a tail on. You can also note sidehcain if you dig up the tool-module https://i.imgur.com/JbVUgmt.png