You want to use regulation 7(3) that states:
(3) A person (“B”) who is an extended family member and has been issued with an EEA family permit, a registration certificate or a residence card must be treated as a family member of A, provided—
(a)B continues to satisfy the conditions in regulation 8(2), (3), (4) or (5); and
(b)the EEA family permit, registration certificate or residence card remains in force.
As described, you are trying to satisfy condition 8(2)(b)(ii):
has joined the EEA national in the United Kingdom and continues to be dependent upon the EEA national, or to be a member of the EEA national’s household.
So, it's a
or. The way I read it is:
- Part of household, dependent --> OK
- Part of household, not dependent (has a job) --> OK
- Not part of household, dependent ---> OK (like having different address but receiving money and support)
- Not part of household, not dependent ---> Not OK [the entire universe is under this category]