[POE 2] Spell Echo misleading description (incompatible with Orb skills?)

Hello, I'm running into an issue when trying to use two skill gems whose descriptions don't say anything about being incompatible with each other. My goal was to use the Spell Echo support gem to double-cast Orb of Storms with the Overabundance support, for having 2 orbs cast with one button press. Nowhere in either skill description does it say they are incompatible, it just won't let you put them together. My presumption is that the "Limit of 1" part of Orb of Storms has something to do with it, but it isn't made clear that they wouldn't work together (Spell Echo says it can't work on Channeled or Remote skills [cast by minions], but Orb of Storms is neither). Of course, you could say I'm making a mountain out of a molehill, and should just use Unleash instead, which works, but since it casts 2 extra times and the subsequent casts are weaker, and the limit is 2 orbs active, both remaining orbs would have the damage reduced since the first would be removed. Spell Echo doesn't have that problem, and even has a radius bonus on top of that, so it would obviously be the better option. I'm in act 3 and finally found a support gem 2, and this is what I used it on before finding all this out. I was reasonably dismayed to learn, afterwards. I know, I should have looked at the tooltip that tells which of my equipped spells the skill gem works with before I engraved it. Oops. But yeah, I want to say this is a bug, or an oversight. The description was misleading. Change the description to say it doesn't work on Orb skills, or (ideally) make it so they work together, idk. Thanks for listening.