Though I’ll not take time to search the dictionary for you, I’m confident that it shows “conceived” has not the same meaning as “cleansed” despite your claim that it’s just timing.
“The difference is in the moment of the cleaning, but that is not indicated in the scripture you cite”
That statement makes no sense.
Sorry for the shorthand. Of course it is not the same. Both Mary and you and I were cleansed once. Mary was cleansed as she was conceived. She was simply made clean. You and I got cleansed later on in life through baptism. That is the difference in the moment of the cleaning I was speaking of.