Niek You can change the order as you want so there is no line you can draw because the first account can be your own, the second a connected account , the third one of your own, the fourth one a connected account and so on.
I don't have a connected account, but I do have lots of joined accounts and these have a little orange icon with two white interconnected circles in the lower left corner of the account picture. Don't connected accounts have something similar?