Well, my thinking on this is- maybe they have volunteered as part of staff training?
Just me thinking outside the box here but-
Maybe they just want a bit of feedback from how they are doing?.... (maybe they've just done an online course on language and communication and want to put it into practice will it's fresh in their minds)
What they could improve on next time ?
Perhaps they want to 'create' up their own staff training content- stuff that can be shared at a later date for discussion at later staff meetings?
They're not actually working on anything other than their own CPD. Obviously they need feedback about what works - so need to share with parents?