Where does the connection complete — in the trading platform or in my AI assistant?

The connection completes inside your AI assistant. After you start the connection — either from the Connect button in ThinkTrader or by adding ThinkTrader as a custom connector in your assistant — you log in (if you are not already signed in), choose which accounts to connect and select your access type, then confirm. You remain in the AI assistant on completion; the flow does not return you to the trading platform. The connection is then visible both in the AI assistant and in your ThinkTrader account settings, where it can be modified or revoked.