Thanks for the interesting reply. I was under the mistaken belief that SARS-CoV-2 lacked RNA Pol proof-reading, so that is my bad there and responsible for my

Thanks for the interesting reply. I was under the mistaken belief that SARS-CoV-2 lacked RNA Pol proof-reading, so that is my bad there and responsible for my equivocation between it and HIV. I completely accept that not only is it likely that there will be the viruses sharing the same cytoplasms on occasion, in large enough numbers, on long enough infections, etc etc - because one thing we know about biology is how slippery and stochastic things become, but the fact they dont generally share the same host does make this more of an interesting edge case I would imagine. Thanks for your interesting links and thoughtful reply!