The two could cast a one-way soundproofing array if they wanted to discuss things, allowing sounds to go in, but not out.
If they felt the inspiration, they could activate an anti-disturbance array to practice their techniques on the spot, preventing any disruption to others, as well as protecting them from outside influences.
They could even employ a full-on quiet study mode that only allowed the teachings of the instructors to reach their ears without any other distractions.
In essence, even a simple concave experimental desk, packed with an array of features that even the highest of technology could not offer, was enough to fulfill all the academic needs of a disciple.
