>>1
>at this point Bardin's career as director is one of the longest in Russian animation: 51 years, second only (I think) to the 57-year-long career of the Soviet animation patriarch, Ivan Ivanov-Vano.
Ok, I need to correct this. Andrey Hrzhanovskiy holds the #2 spot - he directed from 1966-2020, so 54 years. He was working on another feature film, too, but I doubt that will be finished now that he's emigrated to Israel and it lost its Russian state funding.
Close behind Bardin is Stanislav Sokolov, who began directing in 1976 (if you count a Moldovan Brandy commercial) or 1977, and is currently woefully underrepresented on this site (though I love his "Hoffmaniada"). He also released a film recently, a 20-minute pilot for his "Bulgakov" animated feature which he claimed could be finished "around 2031". It's very possible that it will be. He managed to complete "Hoffmaniada" even though production often stopped and it took 17 years, after all.