Complex sentence: Another view supports the claim that the Afghans were never sure if Hari Singh Nalwa was merely wounded or was really dead; it was the possibility that he might still be alive that kept the Afghan army undecided about its next move.
Split into simpler sentences: Another view supports the claim that the Afghans were never sure if Hari Singh Nalwa was merely wounded or was really dead. It was the fear that he might still be alive that kept the Afghan army undecided about its next move.