It took some effort, but I think I've managed to convince 2B to be a bit more... adventurous.
After some more warming-up I bet she'd be open to such intrusions by considerably larger objects...
But don't take my word for it, you can check for yourself by grabbing the latest build of my mod
here.
On a more serious note, since I'm also releasing season 6 port with Megumin & Marin, I'm gonna go ahead and count it as a double release. So as far as I'm concerned the "double release dream" is not dead after all, but it is however on life support (or is this too much copium?).