Could you draw a diagram of what you are trying to accomplish? Sorry, but it’s not clear to me from what you describe.
It sounds like the H90 Path 1 is the first thing in your chain (you mention the guitar is connected to input 1) so H90 Path 1 will be fixed before anything else.
If H90 Path 2 is in the loop of your HX Stomp, then you’ll need to configure where that path is in the signal chain using the HX Stomp’s routing.
You may find that putting the HX stomp in the insert path of the H90 can achieve different routing options, but there are a lot of ways to go about this so I’m not sure what to suggest yet.
