

Talking does not distract the player from any other actions, and there is no word count limit on how much the player can say. A turn in D&D is said to take six seconds in-universe being restricted to only what a player could say in six seconds wouldn't allow any time for planning, strategizing, or just calling out what you're going to do. The Trope Namer is Dungeons & Dragons, in which certain actions (most notably talking) are designated "free actions" and can be taken in addition to any other actions within the normal limit of a turn.
