No, They just make 2 seperate signs. It would be pretty good if they could join together though!
FAIL!
Unrelated note:
I would support BUT:
1) What if you wanted 2 seperate signs next to eachother and you didn't want to combine them.
This isn't necessarily like a double chest where the functionality works best combined. There are times where you would want to have individual signs next to eachother, how would you do one over the other.
2) How would you put text on them when combined?
FAIL!
Unrelated note:
I would support BUT:
1) What if you wanted 2 seperate signs next to eachother and you didn't want to combine them.
This isn't necessarily like a double chest where the functionality works best combined. There are times where you would want to have individual signs next to eachother, how would you do one over the other.
2) How would you put text on them when combined?
OFFICIAL POSTING/REPLYING GUIDELINES
UNOFFICIAL POSTING GUIDE (PRT)
UNOFFICIAL REPLYING GUIDE (FTC)