Step 1. Play with friends
Step 2. If you don’t have any friends that play Halo, add some good players you find online
Step 3. Use mics and converse
That’s about it. It avoids a lot of join-in progress problems, it helps with making the game feel more competitive, it increases teamwork in a team game.
You can use this guide for any video game really, I’ve been using this guide since sega genesis (talking on the same couch, of course)
Have fun, you can even find friends on these forums.