Sunscorch, but inspectors CAN indicate what it would take to move from one level to the next - it's all there in the level descriptions for each grading.
So for example if a particular grade says 'All children make good progress during the lesson' then an inspector makes a judgement as to whether the observed lesson meets that criterion or not. If a group of children were not making good progress due to low-level or higher level discruption, then that grade cannot be given, and an inspector can say 'To get the higher grade, all children should be making progress, and to do that low-level disruption needs to be reduced', which indicates what was wrong with the lesson and what needed to be done to reach the higher grade.
The minutiae of coaching a specific teacher with a specific class as to HOW to manage the behaviour of a class so that they all make good progress during a lesson is not within the Ofsted report's remit. That is up to the SMT and if necessary SIPs to work on with the teacher concerned, with TAs, with the SENCo, with outside agencies and further training.
Just because an Ofsted inspector does not offer 1 to 1 coaching does not mean that they don't indicate how something can be improved - they can point to the descriptor for the higher grade and say 'to get that grade, you need to do this'. HOW that specific teacher or school manages that, with their pupils and in a particular context, is up to the management of the school.