Oh, absolutely. The first time I saw Waterdeep: Dragon Heist, my brain interpreted the title as it being a adventure revolving around you LITERALLY STEALING A DRAGON and I got stoked (there's a first edition Shadowrun adventure that is pretty much exactly that, but I digress), and I was super disappointed when all that was being heisted was a bunch of gold coins. So now I'm working on "The REAL Dragonheist" (where you do in fact have to STEAL A DRAGON) and yes it's set in Greyhawk and the Free City of Greyhawk and Waterdeep mirror each other quite a bit, and a lot is interchangeable between them.
I suppose you don't want to hear about my other campaign/adventure I'm working on then, which is set in Greyhawk and includes...elements of Spelljammer, lol.
I mean, it should have said "Hunt for the Dragon Hoard." but we already had a Dragon Hoard thing so.