Grey Tank question on 27RBS

[MikeGB]

Apologies if someone has answered this before but I couldn't find anything.

I have a 2021 27RBS which I got used so no dealer explanation and I see that there are 2 grey tanks. One in the galley region and one which dumps through the black tank discharge.

My question is this: Which grey tank fills from where?! Does the galley drain to the front tank which is most likely, and if so is it separate form the bathroom drainage?

New camper here....

[Wit]

Yes they are separate. If your galley is in the front it will drain to the front tank and vice versa.