The living guru program's lack of siddhanta

PADA: Srila Prabhupada says there are often gaps in the parampara, how can we challenge what he says? And for example Visvanatha accepted Narottama as his guru, but they were not on the planet at the same time? (The GBC has edited these Visvanatha statements in the Chaitanya Charitamrta). And Vyasadeva is always living, fine, but he is not always being worshipped as the current acharya? Without having special powers, no one can even see Vyasadeva at all? Sorry, there are not only gaps but Krishna Himself says the guru line is often lost altogether, i.e. people eventually even stop the worship of the last link, so He has to appear Yuge Yuge to re-establish the chain. That means there are huge gaps ALL THE TIME, so He has to appear YUGE YUGE, because there are often NO current and living acharyas. Krishna thus has to RE-appear to start the chain again because there are huge time gaps, and Krishna says this occurs all the time, perpetually, Yuge Yuge. I am not sure how we can assert that Krishna does not know what He is talking about? As for the July 9th letter, it merely confirmed the May 28th conversation, Srila Prabhupada said he would name some people to conduct initiations as ritviks in the future when he was no longer here, i.e. after his departure. The July 9th letter simply names the people who were going to initiate as ritviks as was discussed previously. Then again the living guru exponents have so far made a lineage of debauchees and fools, ok they are living, not sure they are qualified to be the successors to God? And so far we are not even being given the name of the person who is the living successor by persons like Evil das, so this argument is dead on arrival anyway since it has no practical application. ys pd