Linked Accounts shows your available account connections and Twitch identity. It also has a separate section for Twitch extension progress links.

Three things that can look similar

• A linked Twitch identity identifies the Twitch user associated with SerraForge.
• A Twitch extension progress link connects card/extension progress to the appropriate SerraForge identity.
• A streamer/channel relationship is a separate association and does not automatically grant SerraForge site permissions.

These are not interchangeable, and one being connected doesn't prove all three are connected. Review the status of each in Linked Accounts and Arbitrairians account settings.