It's not impossible, however, it is unlikely. With 6 instructor changes in 8 hours, the chances of his training not being as good as it should be are very, very high.
Rushing students through the first few lessons seems to be a particular talent in the UK. With 8 hours on the clock and that much disruption in his training, then it's hardly surprising to think that things might not be as they should.
With a talented student and good instruction, then it is feasible to only take 10 hours to get into the circuit with no problems. AOB9 could be Bader reincarnated for all I know, but even the great Doug would struggle with that sort of training set-up!