Not according to CNN
https://edition.cnn.com/2023/09/07/politics/poll-hunter-biden/index.html
This inquiry is all about Biden & family and mainly what happened before Trump even announced he was running.
I'm not sure when they will, or even when they have to. They want as much as they can get before an actual impeachment and this inquiry process apparently helps them get it.
This investigation has been ongoing for months, without any comment about Trump. Now the next step has been announced, suddenly Trump is supposed to be the driver! What a load.