@Martin Misiowiec are you familiar with what data Gong can push to HubSpot with one check of a box? See this help center article on syncing calls to HubSpot. It does not include pulling notes/ comments.
You could explore import data of your choosing from Gong to HubSpot using a Zapier, but based on my research Zapier does not allow you to pull comments over to HubSpot from Gong. You could do a custom integration using the Gong API, if it was that important to you.
To add another layer, if that call is a Discovery call can reps take notes in accordance to MEDDPICC?
The notes are free form text so Gong would not impose a standard.
It may be of interest to you to review how to take notes during a call and have these notes attached to the call as comments.