If they ban you on US battle.net, can it be linked to EU battle.net ?

Basically I'd like to know if I get ban on my US battle.net accounts and they decide to ban all the accounts on that IP/Mac address will they also ban the EU battle.net accounts ? For exemple, I have 2 groups of 4 bots running 12h each on a computer (one with 4 US battle.net and the other one with 4 EU battle.net) and 1 or more accounts of either the EU group or the US group get detected and they decide to check for all accounts running from that computer and/or ip will they ban both group or just the region in which they detected the bots ?

I'm not sure if it's clear but to be more precise the US and EU accounts are not on the same battle.net. I know they can ban EU and US wide if it's on the same battle.net but in this case it would be a separate battle.net for each account.