Scheduled communication is far easier to handle than random interruptions. If your target is to get update every hour you just dedicate a person during inciden

Scheduled communication is far easier to handle than random interruptions. If your target is to get update every hour you just dedicate a person during incident to communicate with the "outside" and make rest of the team post the updates on shared chat, which you want anyway if you don't want people to get on eachother's toes