Kalt figured that a presence such as Tara's, another wound in the force, would provide some valuable insight to their research. Perhaps she would even be able to provide him with the ability herself, should she learn more of it.
Tara mentioned that she was interested in learning how Alina became a Sangnir. Kalt was still fairly unfamiliar with their race in general himself. He wanted to learn more about it first though, before taking it in. Something suggested to him that it might also be partly responsible for Alina's lack of other abilities in the force, although the fact that Tara also had limited force ability suggested that might not be the case.
"Has she told you about her power? As a Sangnir, I mean." He asked, curious to see if she knew anything more.
Tara would take the lead on opening the holocron. The device, a marvel of Sith design, amazed him. He had learned of holocrons at the Academy of course. Although he tended to pay attention to more of the details than others did. Tara would need to face a challenge in order to open it. A guardian, an aspect of the original Darth Cognus' psyche, will evaluate her and determine if she was worthy. Tara was likely more aligned to Cognus' teachings so it would be better for her to open it. Likely it was a trial not unlike the one Alina would have faced when she had obtained the holocron.
Once she had passed and remarked that Darth Cognus was beautiful, Kalt focused on doing what he could to study the symbols and language it presented. They would need to translate the teachings presented.
"While I would love to spend a great deal of time going further into the holocron, I think we should focus on why we're here." He suggested to his fellow Acolyte, once she had a grasp of how to navigate the holocron. Whether Tara agreed was up to her of course. He wasn't really going to stop her if she wanted to start from the beginning. He also had a great deal of respect for Darth Cognus, almost equally as much for Darth Bane and Darth Zannah.
The holocron delved into the subject of her ability to suppress the force in others, especially in those that did not align with the Dark Side. She had been able to even suppress Darth Bane's ability for a time, despite the fact that he was able to overcome it eventually. Kalt had a personal theory that it was more likely that Darth Bane and Zannah were so powerful during their interactions with Cognus, that they were simply able to overcome it. There was a plethora of useful information for Tara to use on expanding her abilities. Likely with practice she'd be able to get on Alina's level of capability soon. Kalt had taken a considerable number of notes for himself as well. A pen telekinetically wrote notes into his personal notebook, page upon page, until he eventually decided to just get his datapad, which was a more convenient medium. There was no way he would leave this information behind, even if it wasn't of direct use to him in the moment.
The only problem was that there was no clear way for him to learn it himself. It was clear that like Tara and Alina, Darth Cognus likely was born or naturally developed this ability. Although the fact that it didn't limit her power was of great interest to him. Clearly there would need to research further to learn more.
"I believe there are more Sith masters with this ability. Before Cognus, there were at least two other Sith Lords that I know of who had this ability, Darth Nihlus and Darth Traya along with a Jedi called Meetra Surik. I believe we might be able to discover more if we can find holocrons or information pertaining to these three."