Are devices on same Norton account connected in any way?

I bought Norton Internet Security with 10 seats and I am wondering if the devices on that account are connected in any way.

If I have Computer A in one seat and Computer B in another seat, are A and B connected in a way so that if A got a virus, B could as well? I am not good with computers, but have heard viruses can spread through file sharing. I am wondering if having computer A and B on the same Norton account would be similar to file sharing and if viruses could spread that way.

Thanks