Yeah so firstly I did re-watch and yes, it did get fixed.
I'd rather have the U20 coach talk than Nakata just call a timeout and have them stand there.
Aihara, just similar to previous Ferhat Akbaş's function, did all the tactical coaching on court, while Nakata as the head coach was having the symbolic role. I guess in preparation for the Tokyo Olympic, Aihara was called in to help the senior NT, previously he was just in the U-19 or the second team. I did not see him around in the senior NT during the 2019 World Cup. This guy seems to be more competent than Nakata.
Noboru Aihara 相原昇 (born 1968)
https://women.volleybox.net/noboru-aihara-p27802/clubs
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