If you are using one of the online administration tools (e.g. FastDraft) this will kind of force you down the right road anyway. You have to submit an individual quote, and if they have not responded you would have to within the system individually state they have not responded if the “deemed acceptance” is to kick in.
You would like to think a degree of common sense would apply here. NEC4 softens “notify” to “inform” in terms of notifying test and inspections so that whilst it should still be in writing they do not need to be “notified” individually separately.
13.7 is about not having multiple different issues on the same communication as it would be hard to close some out and have others open. If there were 200 minor defects at the end of the project you would not need/want to notify each individually - you would notify one communication saying the attached list of 200 defects needs correcting.
In particular 13.7 is getting away from “minutes of meetings” being a form of notification. Any notifications, instructions and acceptances would be communicated separately so they clear and transparent rather than being left buried in a section of a set of minutes that may or may not be clear what they are saying.
For the issue you state about non-response to quote I would avoid any questions of subjectivity by notifying separately each quote that has not been responded to. It will not take you long and can not in any way then be challenged.