I see you’ve chosen a solution already, but I would still like to offer an alternative way which I tend to use every now and then, and that is to defined a field with a follow up question for myself.
So I’d typically write something like:
Useful stuff referenced from what the presenter actually said. [question:: Can I use this in [[data portal]]]. More stuff from the presenter...
If you combine this with this query:
```dataview
TABLE question
WHERE question
```
You could get this output:
Where you see the question from above as the last row in the table (I’ve got other question fields in my test vault already… 
)
I kind of like this variant since it is clearer to me that the question is an actual question and not a part of the meeting reference itself. And I use similar marking to mark highlights or ideas within the context of other notes.