Sorry, I’m not sure what the intended outcome of your setup is.
If you are using the ML10X as your loop switcher, I would suggest using Dual Mode: https://cdn.eventideaudio.com/manuals/h90/1.12.5/content/edit-modes/routing.html#dual-routing
Connect 1 loop to H90 input/output 1, connect another loop to H90 input/output 3. This will allow you to place either H90 effect at whatever point in the signal chain you like.
