I like the feature on Facebook such as creating & adding your 2nd account and capable of switching your 2 accounts and vice versa conveniently using internet browser, phone & tablet app. Those 2 accounts don't need to be friends on Facebook.

But when it comes to Portal, it doesn't work this feature. In order to add another account to Portal and switch accounts, I need both accounts to be friend on Facebook.

So think about this way, why are you allowed to link up between your primary & secondary account using platforms (ie. internet browser, phone & tablet app) without the need to be friends except Portal platform?