You haven't read your own link - it quite clearly says
refurbishment work began in April 2020
and the November text was regarding fresh redecorations.
Lulu Lytle, who was working on the redecoration of the Downing Street flat, said she was present only “briefly” at the gathering on 19 June 2020 while waiting to talk to the Prime Minister about the work
Yes Clavinova, but it is not at all clear what "working on" means in this context. Was she there for the day to plan redecoration, was she overseeing something. Why was Johnson still oiling around for handouts in November 2020, why was LL's work still not complete?
None of this is clear, some of the timings seem off and none of us know the truth for sure, not even you, Clav.
I still think Lulu Lytle was there specifically for Call-me-Churchill's notparty. I may be wrong. I may be right. Let's see what Sue Gray has to say. Meanwhile, patronise away if it makes you feel good, I really couldn't care less.