I'm humbly requesting we split these two releases
Yes, they both come exclusively with one LE US package.
But when you open said package, you get a single-wide jewel case with two discs in it titled "Touhou Double Focus Aya & Momiji's Double Disc Set"
And then you get a double-wide jewel case with four discs in it entitled "Touhou Genso Wanderer Meandering Music"
The packaging itself seems to be treating them as two separate releases. And ... rightly so. Different games, and different genre of game for that matter.
If someone can do the split (discs 5 and 6 are the Aya/Momiji album) and duplicate the rest of the base info, I'll try to fill in any other gaps. Including, of course, full packaging scans. Which I'm working on now.