It's a great reminder of how we really don't know skaters personally. and like you said, they are still "performing" in front of the media. There are skaters who are cordial with each other but mostly share space because they have the same competitions, and there are skaters who spend most of their time together regardless of profile / skill level, because they are training mates or even off-ice friends. The latter one especially happens a lot behind the scenes and not in front of cameras, so sometimes it can catch fans off guard that some skaters are a lot closer personally than others.
My guess is Mone was caught off guard unfortunately

It probably hits harder especially because Mone just shared quite a lot of podiums with Kaori last season + WTT, some really big ones too (GPF, Worlds) as the 2 Japanese skaters (usually with an American) and Kaori doted on her like a little sister / daughter whenever that happened, and it didn't happen here. And Kaori is in her last season too, so maybe a lot of skaters want to spend longer time with her, including Mone

But yeah I can't blame Kaori because it's really not a given to share a podium with a training mate, especially one who bloomed so late like Saki. And they made it just in the nick of time too, right before Kaori retired. I mean as you know, it was so hard for Saki to get an international assignment (and if Japan didn't start hosting a challenger, she likely wouldn't been sent) so there may be no other opportunity after this. I hope she enjoys every moment of this last season the way she wants to, not how she is expected to by others.
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