Except for the intersession break, unless they adjourn the 114th Congress on December 31 at 11:59PM and immediately commence the 115th Congress on January 1 at 12:01AM, which won't happen.
No Democrat is going to be sworn in at 12:01AM on New Year's Day to help Republicans thwart Obama, so there will be a recess between Congresses.
-PJ
A recess for making appointments must be at least 5 days long. Obama got burnt on that a couple times and it went to court....and they shoved it to him.