1948 rule vs category n. 5

[digatta]

I thought i understood the rules clearly for citizenship via JS and am positive that i am eligible under category n. 5 (basically through my GGF who emigrated from italy so it looks like GGF - GF - F - me )

i read this on the consulate instructions today though in a separate section from the rules for all the categories:

A person born before 01/01/1948 can claim Italian citizenship only from his/her father, who was not a naturalized citizen of another country before his child’s birth.

my GF was born before 1948 and before my GGF naturalized. i thought that was all i needed to do to obtain JS through my F (my GF's son).

BUT my F was also born before 1948 as well. and by the time he's born my GF is a naturalized citizen which sort of contradicts the rule quoted above. the rule quoted above however contradicts the rules laid out in cat n. 5!

i think i'm just reading more into this than is really there but the two do seem to contradict themselves.

any thoughts from people out there?

thx