Stop making things up out of your head lol oda doesn't allude to certain events all the time... he didn't allude to sanji having blue flames with lightning, he didn't allude to sanji destroying his raid suit, he didn't allude to kidd and law possessing the awakening or any other bullshit like that...
And as I said, the question of clues concerning conq haki remains purely subjective.
For others, certain events may mean something, for others not.
There are clues for a potential conq haki for sanji for me but it's a matter of subjectivity
Your point is invalid