Another question about subtracting audio files from each other

1. Make two identical copies of gausian noise track
2. Set one phase inverted and combine both tracks output in a bus/another track, they should cancel each other into silence.
3. Send the tone track (preferably inverted) into the bus aswell so now it has 3 inputs,
4. Add in another tone track that is phase inverted/opposite from step 3 and mixes together with step 3s output

Now, where the fun comes in... what happens when you add fx to different parts of the signal chain so these cancellations become imperfectly dynamic and evolving. What happens when the signals cancelling have compressors with different attack and release settings? What happens when you throw a transient designer like elysia nvelope on different stages of this signal chain?

This kind of effect isn't too unlike a basic guitar pedal comb filter just a lot more unhinged.

My first instinct is phase inversion. I feel like we can do this with sidechaining again though.

A couple filters to isolate the frequencies you want to remove, and then a gate? Idk I might have to fiddle around in Reaper later and see what I can come up with. It's been like 15-20 years since I spent much time in front of a DAW. Imma think on this.