You can’t make an omelet without breaking a few eggs, and the more people there are making stuff, the sooner things can get chaotic.
If you sense confusion about what the team is doing or how they’re doing it, then it’s your job to at the very least, bring it up. Regardless of your role. And if you can, please, clear up the confusion. Don’t presume your boss is aware of the situation; odds are they have no idea.
And countless precious hours can be spared by simply letting the people you work with know you’re starting a new task. That’s the cue for others to report that it’s already been resolved, or that crucial new information is available.