I wasn't able to catch the name of the quest before it was completed. In Helnim just outside one of the gates near the Silt Strider there is a dunmer named Garo Varsel. He asks you to find his "friend" Temis Lorthus, and he asks you not to speak to him. If you do not speak to him after you find him and immediately report back to Garo, the journal will have quite a few inconsistencies. If you do this the journal will state "Despite Temis asking me not to, I told Garo that he was staying at the Red Drake Inn here in Helnim.
The alchemist in Andothren, Temple sells velc nectar sac which is illegal. There might be a story behind it, but it's too inaparrent. And it just breaks the general TR narrative about restrictions on Velk trade.