Careful: IOS 17.6 has mfi error with Oticon hearing aid.
Today I upgraded my iPhone 12 Pro Max to iOS 17.6. My mfi Connection with Oticon real 3 hearing aid did not work. After deleting the hearing aid in IOS a new installation worked "sometimes" (5 attempts gave one connect signal). But only one hearing aid connected to the iPhone. Streaming always ended after some seconds. The iPhone lost then contact. The Oticon companion did not work either.
The connection of my hearing aid to the computer (MacBook Pro 15'' with M1) worked after a new installation.