Some may see that as an. "if you can't beat them - join them" behaviour management strategy.
I used this strategy with both a senior high class and a younger but just as noisy class. The agreement was every 20 minutes, I would give the students a 3 minute CHAT TIME after which the AGREEMENT was a solid 20 minutes work.
When the chat time was over, the timer started for another 20 minutes.
It worked well and strangely enough over a period of time, the chat time turned into a lot of class related talk.
To be effective with a noisy class, you mus set clear expectations.
If you find yourself stopping every few minutes to settle a noisy class, this chat time strategy might be worth trying.
If you get Chat Time working effectively, your Learning Time should be quality learning.