The optimal result will be achieved by using alkaline (high pH, meaning greater than 7) followed by acidic (low pH, less than 7).
Either (high/low or low/high) creates heat of neutralization but high/low tends to rinse better.
Because of customer satisfaction, I would experiment before opening.
A friend who teaches physics at USF explained this to me. He’s pretty smart.
So, I would say you didn’t ask the right question or those chemists aren’t really chemists.