I’m not sure I fully understand the question, but channels can’t “span” sync gateway databases (although you could have two databases that happened to have the same channel name)
Can you give more details on the problem you’re trying to solve?
I have two buckets published, which through two channels I make differentials searches 1 by id and another by email, I had users that when it comes to search by the channel this is blocked generating timeout, but restart the gateway and the user can access .
Currently I have 6000 users who use the App (Android and iOS) and from the web using the APIs.
I’ve had this scam of timeouts in different users.