Hanuman coughed out blood and did not understand what was happening since allies of the Dashavatara were not within the loop that the Celestial Avatars had discussed. At the same time, Rama did not have the time to tell him about this at all. It was not like the System where everyone was connected to a central 'brain' where important communications could be shared when essential.
That was more than sufficient for Sir Alan to once more bring another strike against Hanuman with his electric chainsaw. But unlike most who would swing their chainsaw to have a wide range of attack, Sir Alan retracted his chainsaw attached rifle and plunged it into the Hanuman's chest as quickly as he could.