This one only really applies to current IFATC controllers, if you aren’t one, what are you waiting for?
When controlling, controllers will communicate with each other using Slack. The thing with controlling without looking at Slack, known as controlling with “one device”, a lot of people say it’s not possible at a busy airport.
It is possible, it’s been done in the past for various reasons, but you have to have notifications on at all times so you can recieve information.
If it’s going poorly then some communication is very important. If it’s going fine then no problem not typing. You can tell when someone is reading what you’re saying.
If you can’t react correctly to the new information from the other controllers then consider closing and finding a better way to have a reliable line of communication.
This is something that is unknown to pilots that behind the scenes we are in constant communication while controlling.