"Bombardier commander seemed confused"
According to an article in the Indian newspaper The Hindu:
Even as the Bombardier is on its way in, Nepali pilots of other aircraft are heard warning the ATC that the Bombardier commander seems confused. Speaking in Nepali, the pilots warn: almaliyo jasto chha (he seems confused); disoriented bhae jasto chha (he seems disoriented); and yo kata jaala (he may end up anywhere).
This explains the Nepalese voices in the ATC recording.