Generally, if it happened in a CS I regard it as "canon". Gameplay is its own thing however, for example there are several fights in the game we do as groups but the NPCs say that the WoL did alone.

Originally Posted by
Ametrine
The only detail that bothers me is Godbert being on the Syndicate but playing no role in ARR or HW when the group is involved.
Technically, Godbert does appear in the MSQ during the the one full meeting of the Syndicate we have seen. I think depending on what order you did Hildebrand in vs the main MSQ though he can be oddly over clothed for him. If you did patch 2.2's MSQ before 2.2's Hildebrand quest (and the reveal that Godbert was Hildebrand's father and a syndicate member) then in that CS he is wearing a full robe and hood. If you did Hildebrand first then he may have normal character model. I still need to check this on my alt though.
He is likely the uncle on the syndicate that Serverian mentions in the ARR alc quests.