Prior to sharding all partners were responsible for keeping up with everyone in a batch. Now there are multiple groupings of partners which oversee a smaller s

Prior to sharding all partners were responsible for keeping up with everyone in a batch. Now there are multiple groupings of partners which oversee a smaller subset. I'm not certain, but I'm sure partners are assigned based on their domain expertise. Though, I'm sure all partners are open to helping anyone in the batch if needed. Can anyone comment on this?