Right, but through a centralized server. Not peer to peer. Peer to peer doesn't just mean "two people talking to each other". Not knocking it, just saying it's disingenuous to call this p2p.
From the wikipedia page:
Telegram provides end-to-end encrypted voice and video calls[21] and optional end-to-end encrypted "secret" chats. Cloud chats and groups are encrypted between the app and the server, so that ISPs and other third-parties on the network can't access data, but the Telegram server can.
P2P is kind of spectrum, but I get your point.
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