I haven't read the books yet but yeah i think all the Solos are all interconnected, i think each Silo has one person who knows the absolute truth and it's passed down to a chosen one, like the current Mayor, the timing of the previous mayor being bumped off was telling so he could take the reins just when the status quo of everyone in the Silo being docile was being threatened with the Sheriff's wife and the IT guy.
Also the present Mayor always had a issue with a younger Juliette taking the "best heat tape" and now we know why, that specific tape was on Juliette's suit when she went out (Reddit).