Hope this is not too off-topic, but because I've been curious to learn about the younger assistant coaches who appear sometimes at competitions, I searched up Evgeny Vlasov, who seems to be assisting Liudmila Sapronova with coaching (and, it turns out, choreographed Matvei's new FP). You can spot either/both of them at Matvei's competitions - young guy and a lady who often wears a pink hat.
Here are some videos of Vlasov when he was still skating competitively, not too long ago as it turns out! (Searching Youtube in Cyrillic works wonders )
https://www.youtube.com/watch?v=80YDJGnrskM [weird music cuts, but light and fun]
https://www.youtube.com/watch?v=GgKeJJFjdls [cool music, from the Caucasus maybe?]
I can spot Butsaeva and Sapronova by the boards, not sure which of them used to be his coach. If he originally skated at SSHOR Moskvich, it would make sense that he's now coaching there. He was still competing a/o 2016-17, so would have overlapped with Matvei's era, perhaps explaining their friendly vibe in K&C.
I can't find videos of Sapronova skating competitively... I guess competition video streams weren't really a thing in her time
Immediately want to take that kids gloves off
And FYI, they have vids of Mishin/Moskvina back in the day. How else would I have known Moskvina was the 1st to do the Beillman? Sapronova probably just wasn't good enough. LOL