What you failed to highlight and fail to acknowledge is "he may adjourn them to such time as he shall think proper" …WITH RESPECT TO THE TIME OF ADJOURNMENT".
The caveat here is both the House and Senate must disagree with a time of adjournment for Potus to intervene. Rest assured that will never happen while McConnell is Majority Leader. He has failed to officially adjourn since Potus took office, to prevent Potus from making recess appointments.