not in recess. In pro forma session
http://thomas.loc.gov/cgi-bin/query/R?r114:FLD001:S50885-S50887
note #16 - Orders for Monday
“Mr. McCONNELL. Mr. President, I ask unanimous consent that when the Senate completes its business today, it adjourn, to then convene for pro forma sessions only, with no business being conducted, on the following dates and times, and that following each pro forma session, the Senate adjourn until the next pro forma session: Monday, February 15, at 11 a.m.; Thursday, February 18, at 9 a.m.; I further ask that when the Senate adjourns on Thursday, February 18, it next convene at 3 p.m., Monday, February 22, unless the Senate receives a message from the House that it has adopted S. Con. Res. 31, and that if the Senate receives such a message, it stand adjourned until 3 p.m., Monday, February 22; that following the prayer and pledge, the morning hour be deemed expired, the Journal of proceedings be approved to date, and the time for the two leaders be reserved for their use later in the day; I ask that following the prayer and pledge, Senator Coons be recognized to deliver Washington’s Farewell Address; further, that following the reading of Washington’s Farewell Address, the Senate be in a period of morning business until 5:30 p.m., with Senators permitted to speak therein for up to 10 minutes each.
The ACTING PRESIDENT pro tempore. Without objection, it is so ordered.”
You are not understanding the process. Read up on it.
House consented. No pro forma.
Start reading with the link I gave to the Congressional Research Service. It outlines the procedure.
What they did is an” Adjournment for more than three days” as opposed to a Adjournment sine die.
It is an intersession recess. No pro forma. Read up on the Senate or House rules under that category.