What he was about to learn were things that would give him a decisive edge against others even though he had little use for those skills now. They merely provided him with a direction—where he should be heading with his studies. The general was unlike the grandmaster. As a warrior, he was more frank and forthcoming, making him more willing to share his knowledge with Saleen.
The general's level suggested that he had a profound understanding of the world. If he had been willing to train in magic again, he would have reached similar heights in that discipline too.
Saleen initially had things he wanted to ask the grandmaster, or, more precisely, information he wanted to acquire by trading. Seeing how easy it was to talk with the general, however, he simply posed his questions to the level-18 warrior. It was no big deal.