You didn't have a constant companion in Rev 1. yes there are sections where you have npcs following you, but most of the time you run around on your own.
The campaign structures reminds me of RE6 in the sense that the overall campaign is split between seperate characters/stories/locations. The whole episodic thing they're doing could also very easily feel like different chapter from RE6 depending on what each episode contains.
The footage I've seen honestly just makes it look like pretty damn linear sections. I've not seen a map being brought up in the footage I've watched once, and granted, I've not watched all the footage. If there is actually footage of a proper oldschool style RE map, or screenshot, I would love to see it, or just tell me if there is one really.