Asked again in English and specifically mentioned the Status Match Challenge. Less than an hour later, the same response as matmas.
"... In reference to your email, we hereby inform that in your case, since your Gold status is performed by Status Match Challange, in this first stage, you only need to have 25.000 status miles. We also would like to inform that the information of the 50.000 status miles is the usual value for Gold passengers in order to keep the status. TAP Air Portugal thanks you for your preference... "