This letter was given to Msgr. Lefebvre to send in response to the Pope's letter:
Lastly, I wish to express my gratitude for the intention that you manifested to take into account the particular situation of the Society, proposing to nominate a bishop chosen from its members, and especially in charge of providing for its special needs. Of course, I leave to Your Holiness the decision concerning the person to be chosen and the opportune moment. May I just express the wish that this be in the not too distant future?
Of the letter you refer, Msgr. Lefebvre says:
Indeed, in that letter - I do not have it here - which he brought me from the Holy Father, there is an astonishing sentence. It goes, "It is possible that we consider one day granting you a consecration," as if it was something very vague, a mere possibility, an eventuality. I cannot accept that.
It would seem that he misremembered, as the response prepared for him does not fit with this "possibility".
"Of course, I leave to Your Holiness the decision, etc."
Sounds like a suggestion to me. Shows where some of Ratzinger's people were coming from. The letter was outrageous and demeaning.