I actually missed that you mentioned the nighthawk in your post somehow, I bought one in 2020 so I wouldn’t have to rent Comcast’s but that’s what I’m currently using. If you have your own wireless router that broadcasts on the frequencies you need with the SSIDs that are already in your various devices you can almost certainly just throw that into AP mode and then just connect it to sense once it’s configured and not miss a beat.
I’d also recommend getting your own modem(arris surfboard s33 is my recommendation) if your ISP allows it