I'm unable to connect my MFI Hearing Aids to my Vision Pro

Please see: Use hearing devices with Apple Vision Pro - Apple Support

If your hearing devices aren’t listed in Settings  > Accessibility > Hearing Devices, you need to pair them with Apple Vision Pro.

1. Open the battery doors on your hearing devices.
2. On Apple Vision Pro, go to Settings > Bluetooth, then make sure Bluetooth is turned on.
3. Go to Settings > Accessibility > Hearing Devices.
4. Close the battery doors on your hearing devices.
5. When their names appear below MFi Hearing Devices (this could take a minute), tap the names and respond to the pairing requests.
6. Pairing can take as long as 60 seconds—don’t try to stream audio or otherwise use the hearing devices until pairing is finished. When pairing is finished, you hear a series of beeps and a tone, and a checkmark appears next to the hearing devices in the Devices list.

You need to pair your devices only once (and your audiologist might do it for you). After that, your hearing devices automatically reconnect to Apple Vision Pro whenever they turn on.

Same here. Tried with Resound and Sivantos hearing aids latest models. VisionOS 1.1.1. It’s continuously searching on AVP and not showing up on the list. The hearing aids instantly show up in a different iPhone that they have never been paired with before.

I too face the same tech challenge. 2020 M1 MB Air Sonoma 14.4.1 and cannot for life of me get my Resound 3D MFIs seen–let alone paired. No prob with iPhones and iPad. Maybe that one word “select” in Apple’s vague announcement of Macs+MFI hearing kit means I am not “select”?

Have you both read the post by Vancouver22?