hmmm... ok what about the "online rules reference" mentioned in the rule book (page 24)? Said to contain rules specific to terrain and buildings.
I don't want to be pedantic but it seems that a lot of assumptions are being made (youtube) , probably based on other systems. A lot of people think that a least 50% needs to be hidden before an individual model is obscured (in cover). Yet the rules only reference 50% of a squad being obscured means the whole squad claims cover. So what equates to obscured?
Watching this video in the background whilst painting made me think there must have been a rules update:
just found this as well