What does a telegram API key give you 'permission to do'?

Wanting to have one Home Assistant instance that can talk to two separate Telegram accounts - how would you go about it? Thank you


telegram_bot:
  - platform: polling
    api_key: 11979446eeeeeredacted
    allowed_chat_ids:
     - 4444381111
  - platform: polling
    api_key: 57dddddredacted
    allowed_chat_ids:
     - 33332982222
notify:
  - name: telegram
    platform: telegram
    chat_id: 33332982222
  - name: telegram2
    platform: telegram
    chat_id: 4444381111

Would this be the way to do it?!

many thanks!

Reddit thread here. - still unclear