Lind had been in seclusion for centuries so he wanted to catch up on current events aside from the slow recovery of the Under Lands.
He did not know how far it could go as the density of harmonic Qi would vary depending on the number of Sovereigns and possibly Radiant Tiers.
He spread his aura but did not find Barbatos anywhere. Either he was so far away he could not be detected or he was in a chamber isolated from the world much as he had been.
In either case, Barbatos would not respond. Lind only realized at that moment he knew barely a handful of people! It was not intentional but he was too dangerous to be around until he could control his new foundation.
The dryad knew the danger and helped regulate his power without his knowing!
The danger from when he first arrived was the pure destructive power that he was capable of.
Now that he was in control, he was curious about his new neighbors. He stretched out his aura on a more subtle level.