Progress!

Looks like we are close, I can get to the point of the app asking what wallets are available. Let's check how it responds to a PACKET_TYPE_LIST_WALLETS command via USB.
We should get a listing of the wallets via this command:

Nothing, no response. Mind you when I send a request for a specific wallet it works:

Hmmm, perhaps
GetAllWallets: '2323008100000000',
Interesting did not know I could do that formatting. Anyways, that spews back something on the device screen then drops me back to the PIN entry (?)

This function was for dumping the whole of the eeprom space for refreshing the firmware. Deprecated.
Ok, "Scan Wallet" seems to want that a wallet is already loaded and returns an error.
let's look at the list wallets routine more closely.
Grok to the rescue again:

static and aligned again.
SO. Now I seem to be able to get an answer when I ask for the wallets list... but why is it not attaching as in the header. Ah, there seems a trick: load the wallet first via nRF Connect, THEN try attaching the wallet. IT WORKS!
Remains to be seen if can do a transaction but this is a milestone.