Great comment ttdtt!
Yes, I always cringed when it seemed like the brother giving the prayer was actually TEACHING Jehovah something while he went on and on! Or making sure that Jehovah had not forgotten or missed the content of the meeting because he was asleep...
Or when the brother giving the prayer just summarized or reviewed the entire content of the meeting again!
I would think "OK, yes, we have just heard all of that...why repeat it all...?"
That would be like going to dinner and thanking your host on the way out like this: "Thanks for the invitation to join you for dinner on this, Saturday 10th. We started with some small talk, then you offered us drinks, after which we talked some more then you offered us some snacks before we moved to the other room and sat at a large table made out of oak wood. then you asked if we wanted some peas and steak which were cooked nicely in a sauce.....on and on to desert and farwells"
You get the idea