AFTER Luo Yan found out that Filli might be in the area of the forest called the 'Silent Marsh', he immediately went to the Elder's yurt. If there's someone in this village who would know most about that place, then it's definitely the Elder. Luo Yan needed to know first what he would be facing before going there.
This was not the same as fighting the Blights and discovering its source. The additional task involved him finding the source, so he technically couldn't ask about that from the Elder. But this hidden task only needed him to find Filli and bring him back here in the village. So it wouldn't matter if he asked the Elder about it.
"Noctis, have you decided the date of your coming-of-age ceremony?" the Elder asked when he saw him.
