I have a few more questions about sub-addresses, sorry to bother you guys with it, but it's just a bit new to me to get used to the new features.

People said that "accounts" are just user selected groupings of addresses, and have also said that there is no link between individual addresses without any common transactions first.

Now I have a question about 2 possible scenarios:

1. Incoming merger

Suppose you put A,B,C,D in account 1, which represents 1 contextual identity. I assume there is no link here between a secondary account that has no common transactions with it. Althought people have pointed out that there can be linkage between A,B,C,D if we repeatedly receive from the same trading partner multiple transactions on A or B. Obviously if we give them both A,B on the same IP address ,that already links the two, but from what I understood, even if they don't know that A,B are owned by the same person, by repeatedly receiving money to both addresses from the same person, can decode the missing puzzle pieces and see that the 2 accounts are correlated. 2) Outgoing merger

Now suppose there is a 2nd account also owned by the same person, but represending a different contetual identity with addresses E,F,G,H.

Now if we sweep all balances from account 1 and account 2, would that link the 2 accounts together?

What about sweeping just account 1, would that link A,B,C,D together?

( this question was copied from a reddit q&a)