Only if you believe in Pulsing Theory. Jones could have easily doped in the period of 5 to 6 months when he was not tested at all prior to his string of failures in the summer of 2018 and produced long term metabolites for up to a year which is what is publicly acknowledged to have happened and what the actual current science says is possible as I understand it. In fact this is the most logical and likely thing to have happened. Instead USADA ignored that probability in favor of saying it must have contimued to happen from the time previous, over 1 and a half years before. But in order to claim that, they had to invent Pulsing Theory specifically for Jon Jones.