LOL, I just did this too...
I did it as a little experiment.
I think either 1 will kill the other or 1 will just be bigger than the other.
They were some extra beans I have wanted to test out if they're hermi or not, cause they came off a hermi.
So I really don't care about them, I have enough "real" plants going just wanna try it out
Here's a pic too
The smaller 1 was a late bloomer, that's why she's smaller