Multiple Google Accounts

[Da Uniq 1]

I know that you can have more than one google account linked to your phone. But before I do so, can anyone tell me if it merges or syncs all contact data to both accounts?

Google account A is my profesional account.

Google account B is my personal use account.

I've got about 300 contacts in each.

I use one Adndroid device for acct A and a differnt device for acct B.

Sometimed when I don't one phone with me but need access to a contact or calander appt from the other, it can cause problems.

The issue is, I thought about adding both accts to both devices. But I'm afraid that in trying to have all info on both devices, it will sync to the eye in the sky too. Then both of those accts online will have 600 + contacts and it's just too much clutter there for me and I don't want to confuse info.

I also don't think I want to have to create separate groups for them too if it does sync like that.

I home my question isn't confusing. Hopefully someone can answer this for me.