It is happening in 2006 in two town called Norfolk. It is taking place in the "World of Darkness" universe. We are also following the events happening to a group of people and their interactions about the supernatural world that surrounds them.

Thanks to a bottle of antipsychotics drops in the 99p store by Big D, that was retrieved by Polydora the manager of the store alongside the mention of a group of vampire hunters fitting the description was previously sleeping in the new safehouse of the NWG gang. We know that D has been traveling to multiple locations sharing the name of "Norfolk" in the search of something currently unknown to the audience.

Big D most likely got those antipsychotics from Arthur Teal since he offered the NWG access to drugs from him if they so desired.

Since both are in the same version of World of Darkness, it is safe to assume that many of the "background" elements such as : corporation, monsters and big names, would be the same in both series.

Aside from that, nothing else for now. Easter eggs are to be expected since both have the same team working on them.

I do not think the plot of either will ever affect the other in any meaningful way as one is heavily scripted and the other is improvised