Issues accessing intellisense / argument completion with screen reader

[kmcnaught]

While writing code, there are two tooltips - intellisense and argument completion. The latter can be triggered automatically or manually, depending on settings.

I'm looking at the accessibility of these tooltips with a screenreader, there are 5 different types of content to discuss - see screenshots below.
A - intellisense autocomplete. This plays nicely with NVDA, reading the list of suggestions if you pause typing.
B - intellisense docs. I have not managed to get this read out by NVDA
C - intellisense links. I have not managed to select these with NVDA
D - argument completion docs. I have not managed to get this read out by NVDA
E - argument completion links. I have not managed to select these with NVDA

Are there any shortcuts I am missing, or navigation strategies?

Are any/all of these intended to be screen reader accessible, or is the information available elsewhere? (in which case it would be good to have a deliberate decision and this be documented)

[microbit-matt-hillsdon]

The information is a subset of the information exposed via the API tab. However, accessing it in a contextual way is very useful.

I think we'd welcome suggestions.

Some of these behaviours are from CodeMirror 6 with various degrees of customisation.

It might be interesting to review Visual Studio Code's approach.

[microbit-robert]

My understanding from looking at VSCode (which could be wrong), is that the text in the right hand box is placed in a div outside of the visible area which is read out by the screen reader.

Despite there being a close button and link in the right hand box, I can't find a shortcut to access this area using the keyboard only.