https://www.rbc.ru/business/23/03/2021/605a3fbc9a79470b2eb35...
They created a very elegant scheme when through a fictional Arabic investment fund they put russian government money (Government fund invests into Arabic fund which invests into bonds). It is kind of Russian classic and they did it a lot in the last.
Nowadays Telegram Bonds are traded at Saint-Petersburg stock exchange and there are a lot of rumors that Durov attends a lot of private parties in Russia for kids of oligarchs.