PBA,
This is an offensive and pointless posting, let alone one which shows a complete lack of knowledge on these minhagim.
My belief is that the entire inyan of waiting between meat and dairy is highly subjective. I am unaware of where Rambam deduces a 6 hour waiting period from (he does say that because of the meat between one’s teeth with is not removed by cleaning) although this seems to be the most widely-followed practice. Hullin 105a tells us that Mar Ukva’s father would wait a day between meat and cheese, while Mar Ukva says he would wait for the next meal. The time one would wait between meals goes undefined. Germans, I assume, waited three hours between meals.
As long as one does kinuach and hadacha, according to Tosafot, one probably wouldn’t have to wait any formally-allotted period of time. Since I typically follow many S&P minhagim, 72 minutes seems sufficient and in accordance with the texts.