Correct, one example of that subdomain is; ca.gov domain is main domain of California Government, and each department of government have their own sub domain he

Correct, one example of that subdomain is; ca.gov domain is main domain of California Government, and each department of government have their own sub domain here, often at many levels, dmv.ca.gov, CalCareers.ca.gov, calconnect.ca.gov, dgs.ca.gov. All of these 4 have their own account options & passwords. Chrome displays all options on all domains, but on EXACT match, it just shows username, & shows other sub-domains under username, the ones which doesn't match with current dub domain.