How to apply a gradient on 2 objects keeping the gradient continuity?

[joaosp]

I wanna "cut" a triangle (see above, the black one) from that rectangle's left bottom corner, but when I use pathfinder or shape builder tools to do that, the triangle "assumes" the rectangle's full gradient, and instead, I need the triangle to "grab" gradient continuity, like if it had been cut with a scissor (on photoshop I just would have to rasterize the rectangle). I wanna put that triangle on my artwork left bottom, and sure, keeping it editable.

I followed some instructions from an article that said we have to make a compound path and then apply the gradient, however when I move the triangle to the other side of my artwork (where I want it to be), the gradient proportion changes drastically, as you can see here:

Below is the image where you can see the triangle with the right gradient proportion:

So, I want that same gradient exactly the triangle gets while is sticked to the rectangle, but I want the triangle to be where arrow left is, on the artwork left bottom.

[rcraighead]

Two ways:

1. Fill all objects separately, select all and use "Gradient Annotator" ("G") to drag across all objects. This will span the gradient across them all.
2. Convert the object to a "Compound Path", then the fill will be recognized as one attribute.

[joaosp]

See my edits

[joaosp · Accepted solution]

Solved: in order to keep the gradient continuity and have the possibility of moving the shapes without changes on their gradient proportion, make a compound path and then apply a pathfinder "Divide". Bingo!

[rcraighead]

I realized I didn't answer your question. Glad you solved it.

[joaosp]

Some things are only solved by pure luck, that was the case 🙂