[joecool1029]

Likely not, else they'd have confirmed it in their announcement and/or updated their E2E 1-to-1 video call documentation. The Verge asked and never got a response: https://www.theverge.com/2021/4/28/22407752/telegram-group-v...

Documentation I mentioned: https://core.telegram.org/api/end-to-end/video-calls