If this guy is real, and he's not either trolling or compromised, then this is actual evidence that FSB poisoned Navalny. My skepticism would stand corrected. Because US-UK state-funded Bellingcat scam artists are involved, it was harder for me to believe.
cnn.com/2020/12/21/eur…
cnn.com/2020/12/21/eur…
Why would FSB poison a marginal opposition figure, botch it so that he survives, & then get easily caught? Easier ways to kill someone if they want to. Perhaps it’s a Mafia-esque warning shot to people like Navalny they accuse of working w/ Western intel. Thuggish, but plausible.
If this guy is real, it's one more insanely implausible thing that would have to be true. Add to list below that a covert FSB officer involved in an assassination plot would be discussing it w/ an officer (with an invented name he hadn't heard before) over an unsecure phone line. 
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