It seems like an advertising tip.
The cleaning of the milking robot takes place at the same time every day and is therefore a stable factor in the farm and cows rhythm. Emptying the milk cooling tank is done once every 2 to 3 days. But this causes rhythm disturbances every time.
Emptying and especially cleaning the tank quite a bit of time is lost, and the cows that want and may be milked again are not able to do so.
When the cleaning is finished, other cows will come allready and they may be milked again.
And so it accumulates.
And who are the victims again, who keep getting out of their rhythm?
Right! The (new) heifers and low-ranking cows….
A buffer tank solves this.